View source for List of Numberblock Clubs

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'''Clubs''' are groups of [[Numberblocks (characters)|Numberblocks]] they join if they have a certain property (e.g. being a [[wikipedia:square number|square number]], a [[wikipedia:triangular number|triangular number]], a [https://en.wikipedia.org/wiki/Cube_number cube number], a [[wikipedia:prime number|prime number]], etc.). The first clubs ever started were Odds and Evens, in [[Odds and Evens|the episode with the same name]]. Other clubs were introduced in "[[Club Picnic]]". Numberblocks in clubs relate to other Numberblocks in a club, like [[Twenty-Eight]] would be related to [[Thirty-Six]] in the Super Rectangles Club due to them both being super-rectangles. [[Zero (character)|Zero]] is the only Numberblock who isn't in any clubs.<ref>It can be arguable because some of the sequences in the clubs include 0. (3 × 0 and 0 × 3 in Three Club)</ref>

Please do not add Numberblocks that haven't been figured-out yet in the list of members for each club. Don't add imaginary Numberblocks either. Unless specified otherwise, <math>n\in\N</math>.

If you want to add your own fanmade clubs, add them to [[List of Numberblock Clubs/Fanmade]].

== Linear Sequences ==
=== Multiples Clubs ===
<tabber>
|-|Made of Ones=
''Founder: [[One (character)|One]]''

The Made of Ones Club is for Numberblocks that are made out of ones (i.e. the [[wikipedia:natural numbers|natural numbers]]). Currently every Numberblock is in the club except for [[Zero (character)|Zero]] and [[Pi]].

This club's formula is just <math>n</math>, and it is [https://oeis.org/A000027 A000027] in the [[wikipedia:On-Line Encyclopedia of Integer Sequences|On-Line Encyclopedia of Integer Sequences]] (OEIS).

====Gallery====
<gallery>
Badger.png|The badge
</gallery>

====Member gallery====
=====Horizontal=====
These are the arrangements where the factors are in a line, as if they were on a [[Times Table]]. The members will get longer.
{{Scroll box|height=270px|border={{CC|1}}|weight=2|text=<gallery>
static-assets-upload8870713871838762935.webp|One ({{NBCN|1}} × {{NBCN|1}})
2v.PNG|Two ({{NBCN|2}} × {{NBCN|1}})
3 horizontal.png|Three ({{NBCN|3}} × {{NBCN|1}})
WHAT IS THAT MONSTROSITY THIS IS WORSE THAN HARRY AND HAP COMBINED.png|Four ({{NBCN|4}} × {{NBCN|1}})
Horizontal 5, Now With Limbs.jpeg|Five ({{NBCN|5}} × {{NBCN|1}})
Horizontal 6 With Limbs.jpeg|Six ({{NBCN|6}} × {{NBCN|1}})
Horizontal 7 with Different Limbs.jpeg|Seven ({{NBCN|7}} × {{NBCN|1}})
Horizontal 8 with Limbs.jpeg|Eight ({{NBCN|8}} × {{NBCN|1}})
Horizontal 9 With Limbs.jpeg|Nine ({{NBCN|9}} × {{NBCN|1}})
Horizontal 10 with Limbs.jpeg|Ten ({{NBCN|10}} × {{NBCN|1}})
11.PNG|Eleven ({{NBCN|11}} × {{NBCN|1}})
12horizontal.jpeg|Twelve ({{NBCN|12}} × {{NBCN|1}})
DE8C7E62-3007-47CD-A76C-5E0686307535.jpeg|Thirteen ({{NBCN|13}} × {{NBCN|1}})
14.PNG|Fourteen ({{NBCN|14}} × {{NBCN|1}})
15.PNG|Fifteen ({{NBCN|15}} × {{NBCN|1}})
Betterhorizontalsixteen.PNG|Sixteen ({{NBCN|16}} × {{NBCN|1}})
5646975A-B1A0-4936-9BD4-BA568F98563F.jpeg|Seventeen ({{NBCN|17}} × {{NBCN|1}})
18.PNG|Eighteen ({{NBCN|18}} × {{NBCN|1}})
2023an19x1.jpg|Nineteen (Faceless) ({{NBCN|19}} × {{NBCN|1}})
20H.jpg|Twenty ({{NBCN|20}} × {{NBCN|1}})
2023an22x1.jpg|Twenty-Two (Faceless) ({{NBCN|22}} × {{NBCN|1}})
23horizontalbetter.PNG|Twenty-Three ({{NBCN|23}} × {{NBCN|1}})
24horizontal.PNG|Twenty-Four ({{NBCN|24}} × {{NBCN|1}})
28-28×1.jpg|Twenty-Eight ({{NBCN|28}} × {{NBCN|1}})
2023an29x1.jpg|Twenty-Nine (Faceless) ({{NBCN|29}} × {{NBCN|1}})
30horizons.jpg|Thirty ({{NBCN|30}} × {{NBCN|1}})
Seightera13.jpg|Thirty-One (Compound) ({{NBCN|31}} × {{NBCN|1}})
32H.jpg|Thirty-Two ({{NBCN|32}} × {{NBCN|1}})
2023an35x1.jpg|Thirty-Five (Faceless) ({{NBCN|35}} × {{NBCN|1}})
36H.jpg|Thirty-Six ({{NBCN|36}} × {{NBCN|1}})
40-40×1.jpg|Forty ({{NBCN|40}} × {{NBCN|1}})
</gallery>}}

=====Vertical=====
These are the arrangements where the factors are stacked like a tower. The members will get taller.
{{Scroll box|height=270px|border={{CC|1}}|weight=2|text=
<gallery>
static-assets-upload8870713871838762935.webp|One ({{NBCN|1}} × {{NBCN|1}})
Two.png|Two ({{NBCN|1}} × {{NBCN|2}})
Three.png|Three ({{NBCN|1}} × {{NBCN|3}})
4.png|Four ({{NBCN|1}} × {{NBCN|4}})
5 better.png|Five ({{NBCN|1}} × {{NBCN|5}})
6.png|Six ({{NBCN|1}} × {{NBCN|6}})
Better.png|Seven ({{NBCN|1}} × {{NBCN|7}})
8.png|Eight ({{NBCN|1}} × {{NBCN|8}})
9.png|Nine ({{NBCN|1}} × {{NBCN|9}})
10.png|Ten ({{NBCN|1}} × {{NBCN|10}})
New vertical 11.jpeg|Eleven ({{NBCN|1}} × {{NBCN|11}})
TwelveTall.png|Twelve ({{NBCN|1}} × {{NBCN|12}})
New_Vertical_Thirteen.png|Thirteen ({{NBCN|1}} × {{NBCN|13}})
Toll skater.jpeg|Fourteen ({{NBCN|1}} × {{NBCN|14}})
THE SUPER TALL SECRET STEP SQUAD IS HERE.jpeg|Fifteen ({{NBCN|1}} × {{NBCN|15}})
Betterverticalsixteen.PNG|Sixteen ({{NBCN|1}} × {{NBCN|16}})
17vertfull.PNG|Seventeen ({{NBCN|1}} × {{NBCN|17}})
1x18 With Limbs.png|Eighteen ({{NBCN|1}} × {{NBCN|18}})
19vertfull.PNG|Nineteen ({{NBCN|1}} × {{NBCN|19}})
Bandicam 2019-07-08 01-30-31-452.jpg|Twenty ({{NBCN|1}} × {{NBCN|20}})
2023an1x22.jpg|Twenty-Two (Faceless) ({{NBCN|1}} × {{NBCN|22}})
23vertbetter.PNG|Twenty-Three ({{NBCN|1}} × {{NBCN|23}})
1x24.PNG|Twenty-Four ({{NBCN|1}} × {{NBCN|24}})
28tall.jpg|Twenty-Eight ({{NBCN|1}} × {{NBCN|28}})
2023an1x29.jpg|Twenty-Nine (Faceless) ({{NBCN|1}} × {{NBCN|29}})
30tall.jpg|Thirty ({{NBCN|1}} × {{NBCN|30}})
Seightera1.jpg|Thirty-One (Compound) ({{NBCN|1}} × {{NBCN|31}})
32vert.png|Thirty-Two ({{NBCN|1}} × {{NBCN|32}})
2023an1x35.jpg|Thirty-Five (Faceless) ({{NBCN|1}} × {{NBCN|35}})
36Tall.jpg|Thirty-Six ({{NBCN|1}} × {{NBCN|36}})
40 really TALL.jpg|Forty ({{NBCN|1}} × {{NBCN|40}})
1_x_100_better.png|One Hundred ({{NBCN|1}} × {{NBCN|100}})
</gallery>}}
|-|Even Tops=
''Founder: [[Two (character)|Two]]''

Even Tops Club is for even numbers (multiples of 2), since when they stand two blocks wide, they have an ''even top''. All members of this club end in a zero, two, four, six or eight. Members of this club include [[Two (character)|Two]], [[Four (character)|Four]], [[Six (character)|Six]], [[Eight (character)|Eight]], [[Ten (character)|Ten]], [[Twelve (character)|Twelve]], [[Fourteen (character)|Fourteen]], [[Sixteen (character)|Sixteen]], [[Eighteen (character)|Eighteen]], [[Twenty (character)|Twenty]], [[Twenty-Two]], [[Twenty-Four]], [[Twenty-Six]], [[Twenty-Eight]], [[Thirty]], [[Thirty-Two]], [[Thirty-Six]], [[Forty]], [[Forty-Two]], [[Forty-Eight]], [[Fifty]], [[Fifty-Four]], [[Fifty-Six]], [[Sixty]], [[Sixty-Four]], [[Seventy]], [[Seventy-Two]], [[Eighty]], [[Ninety]], [[One Hundred (character)|One Hundred]], [[Two Hundred]], [[Three Hundred]], [[Nine Hundred]] and [[One Thousand]].

This club's formula is <math>2n</math>, and it is [https://oeis.org/A299174 A299174] in the OEIS.

====Gallery====
<gallery>
Even Tops Club Badge.png|The badge
S2 E11.PNG|The odds and evens in [[Odds and Evens|their debut episode]].
</gallery>

====Member gallery====
=====Horizontal=====
{{Scroll box|height=270px|border={{CC|2}}|weight=2|text=
<gallery>
Two.png|Two ({{NBCN|1}} × {{NBCN|2}})
4 square.png|Four ({{NBCN|2}} × {{NBCN|2}})
6 3x2.PNG|Six ({{NBCN|3}} × {{NBCN|2}})
507A5C6D-AFFD-43DC-BC49-CE686FC2425C.png|Eight ({{NBCN|4}} × {{NBCN|2}})
5C61E73F-5FD9-491C-AFCA-D248D43C2EF2.jpeg|Ten ({{NBCN|5}} × {{NBCN|2}})
6x2new.jpeg|Twelve ({{NBCN|6}} × {{NBCN|2}})
7x2 14 with Limbs.jpeg|Fourteen ({{NBCN|7}} × {{NBCN|2}})
16's 8x2.png|Sixteen ({{NBCN|8}} × {{NBCN|2}})
18´s 9x2.png|Eighteen ({{NBCN|9}} × {{NBCN|2}})
Bandicam 2019-07-08 01-29-04-051.jpg|Twenty ({{NBCN|10}} × {{NBCN|2}})
22-11x2.PNG|Twenty-Two ({{NBCN|11}} × {{NBCN|2}})
12x2.PNG|Twenty-Four ({{NBCN|12}} × {{NBCN|2}})
26widerectanglebutglasses.PNG|Twenty-Six ({{NBCN|13}} × {{NBCN|2}})
28 14×2.jpg|Twenty-Eight ({{NBCN|14}} × {{NBCN|2}})
30 15x2.jpg|Thirty ({{NBCN|15}} × {{NBCN|2}})
32 16x2.jpg|Thirty-Two ({{NBCN|16}} × {{NBCN|2}})
36 18.jpg|Thirty-Six ({{NBCN|18}} × {{NBCN|2}})
40-20×2.jpg|Forty ({{NBCN|20}} × {{NBCN|2}})
</gallery>}}

=====Vertical=====
{{Scroll box|height=270px|border={{CC|2}}|weight=2|text=
<gallery>
2v.PNG|Two  ({{NBCN|2}} × {{NBCN|1}})
4 square.png|Four ({{NBCN|2}} × {{NBCN|2}})
6 2x3.png|Six ({{NBCN|2}} × {{NBCN|3}})
8 2x4.png|Eight ({{NBCN|2}} × {{NBCN|4}})
10 5-2.png|Ten ({{NBCN|2}} × {{NBCN|5}})
2x6new.jpeg|Twelve ({{NBCN|2}} × {{NBCN|6}})
New Fourteen Image.png|Fourteen ({{NBCN|2}} × {{NBCN|7}})
2x8.JPG|Sixteen ({{NBCN|2}} × {{NBCN|8}})
182x9withlimbs.jpeg|Eighteen ({{NBCN|2}} × {{NBCN|9}})
OfficialTwenty.png|Twenty ({{NBCN|2}} × {{NBCN|10}})
Newarr10.PNG|Twenty-Two ({{NBCN|2}} × {{NBCN|11}})
2x12.PNG|Twenty-Four ({{NBCN|2}} × {{NBCN|12}})
Twenty-Six Even Top (better).jpeg|Twenty-Six ({{NBCN|2}} × {{NBCN|13}})
Twenty-Eight Even Top (better).jpeg|Twenty-Eight ({{NBCN|2}} × {{NBCN|14}})
Static-assets-upload1195351369020662099.jpg|Thirty ({{NBCN|2}} × {{NBCN|15}})
32 2x16.jpg|Thirty-Two ({{NBCN|2}} × {{NBCN|16}})
36 2.jpg|Thirty-Six ({{NBCN|2}} × {{NBCN|18}})
Static-assets-upload4341491615750582552.jpg|Forty ({{NBCN|2}} × {{NBCN|20}})
Static-assets-upload6832223224624232552.jpg|Fifty ({{NBCN|2}} × {{NBCN|25}})
Static-assets-upload7864840573553160648.jpg|Sixty-Four ({{NBCN|2}} × {{NBCN|32}})
</gallery>}}


|-|Three Club=
''Founder: [[Three (character)|Three]]''

The Three Club is for Numberblocks that are multiples of three. They organised a party in [[Too Many Threes]]. Members of this club include [[Three (character)|Three]], [[Six (character)|Six]], [[Nine (character)|Nine]], [[Twelve (character)|Twelve]], [[Fifteen (character)|Fifteen]], [[Eighteen (character)|Eighteen]], [[Twenty-One]], [[Twenty-Four]], [[Twenty-Seven]], [[Thirty]], [[Thirty-Six]], [[Forty-Two]], [[Forty-Five]], [[Forty-Eight]], [[Fifty-Four]], [[Sixty]], [[Sixty-Three]], [[Seventy-Two]], [[Eighty-One]], [[Ninety]], [[Three Hundred]] and [[Nine Hundred]].

This club's formula is <math>3n</math>, and it is [https://oeis.org/A008585 A008585] in the OEIS.

====Gallery====
<gallery>
Family of Threes.png|The badge
</gallery>

====Member gallery====

=====Horizontal=====
{{Scroll box|height=270px|border={{CC|3}}|weight=2|text=
<gallery>
Three.png|Three ({{NBCN|1}} × {{NBCN|3}})
6 2x3.png|Six ({{NBCN|2}} × {{NBCN|3}})
9 square.png|Nine ({{NBCN|3}} × {{NBCN|3}})
4x3new.jpeg|Twelve ({{NBCN|4}} × {{NBCN|3}})
5x3S5.jpeg|Fifteen ({{NBCN|5}} × {{NBCN|3}})
186x3withlimbs.jpeg|Eighteen ({{NBCN|6}} × {{NBCN|3}})
21 as 7 x 3.jpg|Twenty-One ({{NBCN|7}} × {{NBCN|3}})
8x3.PNG|Twenty-Four ({{NBCN|8}} × {{NBCN|3}})
9x3better.png|Twenty-Seven ({{NBCN|9}} × {{NBCN|3}})
10x3better.png|Thirty ({{NBCN|10}} × {{NBCN|3}})
36 12.jpg|Thirty-Six ({{NBCN|12}} × {{NBCN|3}})
Purple Macaroni.png|Sixty ({{NBCN|20}} × {{NBCN|3}})
Static-assets-upload14586459206679446825.jpg|Ninety ({{NBCN|30}} × {{NBCN|3}})
</gallery>}}



=====Vertical=====
{{Scroll box|height=270px|border={{CC|3}}|weight=2|text=
<gallery>
AEEDB672-5E85-4502-89FE-627EEA25AC66.jpeg|Three ({{NBCN|3}} × {{NBCN|1}})
6 3x2.PNG|Six ({{NBCN|3}} × {{NBCN|2}})
9 square.png|Nine ({{NBCN|3}} × {{NBCN|3}})
TwelveS4.png|Twelve ({{NBCN|3}} × {{NBCN|4}})
3x5S5.jpeg|Fifteen ({{NBCN|3}} × {{NBCN|5}})
Eighteen from numberblocks by alexiscurry ddmkcz1-fullview.png|Eighteen ({{NBCN|3}} × {{NBCN|6}})
21 nb.png|Twenty-One ({{NBCN|3}} × {{NBCN|7}})
Untitled317 20210322174421.png|Twenty-Four ({{NBCN|3}} × {{NBCN|8}})
27in3x9better.PNG|Twenty-Seven ({{NBCN|3}} × {{NBCN|9}})
Thirty-0.png|Thirty ({{NBCN|3}} × {{NBCN|10}})
36 3.jpg|Thirty-Six ({{NBCN|3}} × {{NBCN|12}})
Static-assets-upload8955402869547699614.jpg|Sixty ({{NBCN|3}} × {{NBCN|20}})
723x24.PNG|Seventy-Two ({{NBCN|3}} × {{NBCN|24}})
</gallery>}}

|-|Square-With-a-Hole-in-Club=
''Founder: [[Eight (character)|Eight]]''

Square With a Hole in Club is for Numberblocks that can make a “square-with-a-hole-in” shape. All members of this club are multiples of four (With the Exception of [[Four (character)|Four]] himself). Badges of this club were given to [[Eight (character)|Eight]], [[Twelve (character)|Twelve]], and [[Sixteen (character)|Sixteen]]. Other members of this club are [[Twenty (character)|Twenty]], [[Twenty-Four]], [[Twenty-Eight]], [[Thirty-Two]], [[Thirty-Six]], [[Forty]], [[Forty-Eight]], [[Fifty-Six]], [[Sixty]], [[Sixty-Four]], [[Seventy-Two]], [[Eighty]], [[One Hundred (character)|One Hundred]], [[Two Hundred]], [[Three Hundred]], and [[Nine Hundred]]. By the nature of this club, all multiples of four above [[Four (character)|Four]] himself will be able to make a square with a hole in.

This club's formula is <math>4(n+1)</math>or <math>4n+4</math>, and it is [https://oeis.org/A192544 A192544] in the OEIS.

====Gallery====
<gallery>
Square with a hole in club.png| [[Twenty-Nine]] holding the badge.
Eight with swhi badge.png|Eight with the badge.
Twelve with swhi badge.png|Twelve with the badge.
Sixteen with swhi badge.png|Sixteen with the badge.
</gallery>

====Member gallery====
{{Scroll box|height=270px|border={{CC|8}}|weight=2|text=
<gallery>
SQUARE WITH A HOLE.PNG|Eight (({{NBCN|4}} x {{NBCN|1}}) + {{NBCN|4}})
Twelvedonut.JPG|Twelve (({{NBCN|4}} x {{NBCN|2}}) + {{NBCN|4}})
Satenar4.png|Sixteen (({{NBCN|4}} x {{NBCN|3}}) + {{NBCN|4}})
Donutthingg20.PNG|Twenty (({{NBCN|4}} x ({{NBCN|4}}) + {{NBCN|4}})
Dountthingg24.PNG|Twenty-Four (({{NBCN|4}} x {{NBCN|5}}) + {{NBCN|4}})
Swah .png|Twenty-Eight (({{NBCN|4}} x {{NBCN|6}}) + {{NBCN|4}})
Donutthingg32.PNG|Thirty-Two (({{NBCN|4}} x {{NBCN|7}}) + {{NBCN|4}})
36donut.jpeg|Thirty-Six (({{NBCN|4}} x {{NBCN|8}}) + {{NBCN|4}})
</gallery>}}

|-|Rainbow Sevens Club=
''Founder: [[Seven (character)|Seven]]''

Rainbow Sevens Club is for Numberblocks that are multiples of seven. The members of this club seen with the badge are [[Seven (character)|Seven]], [[Fourteen (character)|Fourteen]], [[Twenty-One]], and [[Twenty-Eight]]. Other members of this club include [[Thirty-Five]], [[Forty-Two]], [[Forty-Nine]], [[Fifty-Six]], [[Sixty-Three]] and [[Seventy]].

This club's formula is <math>7n</math>, and it is [https://oeis.org/A182341 A182341] in the OEIS.

====Gallery====
<gallery>
Rainbow Sevens Club Badge.png|The badge
Rainbow 7s 7 14 21 28.JPG|7, 14, 21 and 28 with the badge.
</gallery>

====Member gallery====

=====Vertical=====

{{Scroll box|height=270px|border={{CC|7}}|weight=2|text=
<gallery>
Better.png|Seven ({{NBCN|1}} × {{NBCN|7}})
New Fourteen Image.png|Fourteen ({{NBCN|2}} × {{NBCN|7}})
21 nb.png|Twenty-One ({{NBCN|3}} × {{NBCN|7}})
Satenar7.png|Twenty-Eight ({{NBCN|4}} × {{NBCN|7}})
5x735better.png|Thirty-Five ({{NBCN|5}} × {{NBCN|7}})
6x7wlegs.jpeg|Forty-Two ({{NBCN|6}} × {{NBCN|7}})
49better.png|Forty-Nine ({{NBCN|7}} × {{NBCN|7}})
56 facebook image.png|Fifty-Six ({{NBCN|8}} × {{NBCN|7}})
639x7.PNG|Sixty-Three ({{NBCN|9}} × {{NBCN|7}})
10x7.jpeg|Seventy ({{NBCN|10}} × {{NBCN|7}})
</gallery>}}



=====Horizontal=====

{{Scroll box|height=270px|border={{CC|7}}|weight=2|text=
<gallery>
Horizontal 7 with Different Limbs.jpeg|Seven ({{NBCN|7}} × {{NBCN|1}})
7x2 14 with Limbs.jpeg|Fourteen ({{NBCN|7}} × {{NBCN|2}})
7x3better.png|Twenty-One ({{NBCN|7}} × {{NBCN|3}})
7x4.PNG|Twenty-Eight ({{NBCN|7}} × {{NBCN|4}})
35 transparent.png|Thirty-Five ({{NBCN|7}} × {{NBCN|5}})
427x6.PNG|Forty-Two ({{NBCN|7}} × {{NBCN|6}})
49better.png|Forty-Nine ({{NBCN|7}} × {{NBCN|7}})
567x8.PNG|Fifty-Six ({{NBCN|7}} × {{NBCN|8}})
63 transparent.png|Sixty-Three ({{NBCN|7}} × {{NBCN|9}})
70 image.png|Seventy ({{NBCN|7}} × {{NBCN|10}})
</gallery>}}

|-|Football Club=
''Founder: [[Eleven (character)|Eleven]]''

The League of Elevens is for Numberblocks that are multiples of eleven. Members of this club include [[Eleven (character)|Eleven]], [[Twenty-Two]], and [[Fifty-Five]]. Note that this club started before [[Fifty-Five]] was introduced, hence the football/soccer theme of the club.

This club's formula is <math>11n</math>, and it is [https://oeis.org/A008593 A008593] in the OEIS.

====Gallery====
<gallery>
League of elevens badge.png|The badge
League of elevens.png|Eleven and Twenty Two with footballs and the badges.
</gallery>

====Member gallery====
=====Horizontal=====
{{Scroll box|height=270px|border={{CC|1}}|weight=2|text=
<gallery>
11.PNG|Eleven ({{NBCN|11}} × {{NBCN|1}})
22-11x2.PNG|Twenty-Two ({{NBCN|11}} × {{NBCN|2}})
11x5.PNG|Fifty-Five ({{NBCN|11}} × {{NBCN|5}})
</gallery>}}

=====Vertical=====
{{Scroll box|height=270px|border={{CC|1}}|weight=2|text=
<gallery>
New vertical 11.jpeg|Eleven ({{NBCN|1}} × {{NBCN|11}})
Newarr10.PNG|Twenty-Two ({{NBCN|2}} × {{NBCN|11}})
55better.png|Fifty-Five ({{NBCN|5}} × {{NBCN|11}})
</gallery>}}

|-|Falling Apart Club=
''Founder: [[Thirteen (character)|Thirteen]]''

The Undercover Thirteens Club is for multiples of Thirteen, like [[Thirteen (character)|Thirteen]] and [[Twenty-Six]]. [[Twenty-Nine]] immediately reconsidered calling it "Falling Apart Club" after Twenty-Six broke down into two tens and threes. According to CBeebies' Numbers Are Everywhere club challenge, and the [[Numberblocks Annual|Numberblocks Annual 2023]], “Falling Apart Club" is now its official name.<ref>https://uploads-ssl.webflow.com/5ebbbacd07f0f1a942ac30dc/60fa8ee5ba2cc7af47d3819e_Number%20Are%20Everywhere.pdf</ref>

This club's formula is <math>13n</math>, and it is [https://oeis.org/A008595 A008595] in the OEIS.

====Gallery====
<gallery>
Undercover 13.png|The badge
Undercover 26.JPG|26 with the badge.
</gallery>

====Member gallery====

=====Horizontal=====

{{Scroll box|height=270px|border=
{{CC|3}}|weight=2|text=
<gallery>
DE8C7E62-3007-47CD-A76C-5E0686307535.jpeg|Thirteen ({{NBCN|13}} × {{NBCN|1}})
26widerectanglebutglasses.PNG|Twenty-Six ({{NBCN|13}} × {{NBCN|2}})
</gallery>}}

=====Vertical=====

{{Scroll box|height=270px|border=
{{CC|3}}|weight=2|text=
<gallery>
New Vertical Thirteen.png|Thirteen ({{NBCN|1}} × {{NBCN|13}})
Twenty-Six Even Top (better).jpeg|Twenty-Six ({{NBCN|2}} × {{NBCN|13}})
</gallery>}}
</tabber>

===Remainder Clubs===
<tabber>
|-|Odd Blocks=
''Founder: [[Nine (character)|Nine]]''

Odd Blocks Club is for odd numbers, since when they stand two blocks wide, they have an ''odd block'' sticking out from on top. All members of this club end in a one, three, five, seven or nine. Members of this club include [[One (character)|One]], [[Three (character)|Three]], [[Five (character)|Five]], [[Seven (character)|Seven]], [[Nine (character)|Nine]], [[Eleven (character)|Eleven]], [[Thirteen (character)|Thirteen]], [[Fifteen (character)|Fifteen]], [[Seventeen (character)|Seventeen]], [[Nineteen (character)|Nineteen]], [[Twenty-One]], [[Twenty-Three]], [[Twenty-Five]], [[Twenty-Seven]], [[Twenty-Nine]], [[Thirty-One]], [[Thirty-Five]], [[Forty-Five]], [[Forty-Nine]], [[Fifty-Five]], [[Sixty-Three]], and [[Eighty-One]].

The club's formula is <math>2n-1</math>, and it is [https://oeis.org/A005408 A005408] in the OEIS.

====Gallery====
<gallery>
Odd Tops Club Badge.png|The badge
S2 E11.PNG|The odds and evens in [[Odds and Evens|their debut episode]].
</gallery>

====Member gallery====

{{Scroll box|height=270px|border={{CC|9}}|weight=2|text=
<gallery>
One.png|One (({{NBCN|2}} x {{NBCN|1}}) - {{NBCN|1}})
S1 E4.PNG|Three (({{NBCN|2}} x {{NBCN|2}}) - {{NBCN|1}})
Five1+2x2.png|Five (({{NBCN|2}} x {{NBCN|3}}) - {{NBCN|1}})
7 1+2+2+2.PNG|Seven (({{NBCN|2}} x {{NBCN|4}}) - {{NBCN|1}})
9 1+2+2+2+2.PNG|Nine (({{NBCN|2}} x {{NBCN|5}}) - {{NBCN|1}})
11 football.png|Eleven (({{NBCN|2}} x {{NBCN|6}}) - {{NBCN|1}})
1R+2x6.PNG|Thirteen (({{NBCN|2}} x {{NBCN|7}}) - {{NBCN|1}})
1R+2x7.PNG|Fifteen (({{NBCN|2}} x {{NBCN|8}}) - {{NBCN|1}})
Odd Block Seventeen.jpeg|Seventeen (({{NBCN|2}} x {{NBCN|9}}) - {{NBCN|1}})
Odd Block Nineteen.jpeg|Nineteen (({{NBCN|2}} x {{NBCN|10}}) - {{NBCN|1}})
Satenar8.png|Twenty-One  (({{NBCN|2}} x {{NBCN|11}}) - {{NBCN|1}})
Thiswasatriumph.PNG|Twenty-Three  (({{NBCN|2}} x {{NBCN|12}}) - {{NBCN|1}})
Twenty-Five Odd Block.jpeg|Twenty-Five  (({{NBCN|2}} x {{NBCN|13}}) - {{NBCN|1}})
Twenty-Seven Odd Block.jpeg|Twenty-Seven  (({{NBCN|2}} x {{NBCN|14}}) - {{NBCN|1}})
Twenty-Nine Odd Block (better).jpeg|Twenty-Nine  (({{NBCN|2}} x {{NBCN|15}}) - {{NBCN|1}})
Aaa033s8.jpg|Thirty-One in his odd block form (({{NBCN|2}} x {{NBCN|16}}) - {{NBCN|1}})
</gallery>}}

|-|One-Enders Club=
''Founder: [[One (character)|One]] (Most likely)''

The One-Enders Club is a club for Numberblocks that end in a one. Members of this club include [[One (character)|One]], [[Eleven (character)|Eleven]], [[Twenty-One]], [[Thirty-One]], and [[Eighty-One]]. The club isn't in the show itself, but rather in its official YouTube channel. The proof of this club existing is of 0:22 of [https://youtu.be/tqaYtEhhGOA?si=KzvlLbKgW0Q5xf0O&t=22 this video.]

This club's formula is <math>10n-9</math>, and it is [https://oeis.org/A017281 A017281] in the OEIS.

====Gallery====
<gallery>
Oneendbadge.jpeg|The badge
29CA668D-4764-47C1-826E-5C1070B29D84.jpg|Proof of existence
</gallery>

====Member gallery====

{{Scroll box|height=270px|border={{CC|1}}|weight=2|text=
<gallery>
One.png|One (({{NBCN|10}} x {{NBCN|1}}) - {{NBCN|9}})
Screenshot 2024-02-18 110307.png|Eleven (({{NBCN|10}} x {{NBCN|2}}) - {{NBCN|9}})
Newarr1.PNG|Twenty-One (({{NBCN|10}} x {{NBCN|3}}) - {{NBCN|9}})
31threetensandone.PNG|Thirty-One (({{NBCN|10}} x {{NBCN|4}}) - {{NBCN|9}})
Static-assets-upload344518036251924329.jpg|Eighty-One (({{NBCN|10}} x {{NBCN|9}}) - {{NBCN|9}})
</gallery>}}

|-|Nine-Enders Club=
''Founder: [[Twenty-Nine]]''

The Nine-Enders Club is for Numberblocks that end in a nine. Members of this club include [[Nine (character)|Nine]], [[Nineteen (character)|Nineteen]], [[Twenty-Nine]], and [[Forty-Nine]].

This club's formula is <math>10n-1</math>, and it is [https://oeis.org/A017377 A017377] in the OEIS.

====Gallery====
<gallery>
9 Ender.png|The badge
9s 9 19 29.JPG|9, 19 and 29 with the badge, along with 9 having a square club badge.
</gallery>

====Member gallery====

{{Scroll box|height=270px|border={{CC|9}}|weight=2|text=
<gallery>
9.png|Nine (({{NBCN|10}} x {{NBCN|1}}) - {{NBCN|1}})
Nineteen.PNG|Nineteen (({{NBCN|10}} x {{NBCN|2}}) - {{NBCN|1}})
Nbworld29.PNG|Twenty-Nine (({{NBCN|10}} x {{NBCN|3}}) - {{NBCN|1}})
Static-assets-upload12635159763775974024.jpg|Forty-Nine (({{NBCN|10}} x {{NBCN|5}}) - {{NBCN|1}})
</gallery>}}
</tabber>

==Quadratic Sequences ==
<tabber>
|-|Square Club=
''Founder: [[Sixteen (character)|Sixteen]]''

Square Club is a club whose members are all square numbers. It's the first club in the show ever, being started in [[Square Club|the episode of the same name]]. Their eyes are rounded square. (exception: [[One (character)|One]]). Members of this club are [[One (character)|One]], [[Four (character)|Four]], [[Nine (character)|Nine]], [[Sixteen (character)|Sixteen]], [[Twenty-Five]], [[Thirty-Six]], [[Forty-Nine]], [[Sixty-Four]], [[Eighty-One]] and [[One Hundred (character)|One Hundred]].

The club's formula is <math>n^2</math>, and it is [https://oeis.org/A000290 A000290] in the OEIS.

====Gallery====
<gallery>
Square badge.png|The badge.
One with square badge.png|One with the badge.
Four with square badge.png|Four with the badge.
Nine with square badge.png|Nine with the badge.
Sixteen with square badge.png|Sixteen with the badge.
Twenty five with square badge.png|Twenty-Five with the badge.
</gallery>

====Member gallery====

{{Scroll box|height=270px|border={{CC|4}}|weight=2|text=
<gallery>
1 Square.png|One ({{NBCN|1}} ^ {{NBCN|2}})
4 square.png|Four ({{NBCN|2}} ^ {{NBCN|2}})
9 square.png|Nine ({{NBCN|3}} ^ {{NBCN|2}})
Hot square mama.png|Sixteen ({{NBCN|4}} ^ {{NBCN|2}})
25evenbetter.png|Twenty-Five ({{NBCN|5}} ^ {{NBCN|2}})
36squarebetter.png|Thirty-Six ({{NBCN|6}} ^ {{NBCN|2}})
49better.png|Forty-Nine ({{NBCN|7}} ^ {{NBCN|2}})
Sixty-Fouroffical.PNG|Sixty-Four ({{NBCN|8}} ^ {{NBCN|2}})
81better.png|Eighty-One ({{NBCN|9}} ^ {{NBCN|2}})
One Hundred Even Better.png|One Hundred ({{NBCN|10}} ^ {{NBCN|2}})
</gallery>}}

|-|Step Squad Club=
''Founder: [[Fifteen (character)|Fifteen]]''

Step Squad Club is for Numberblocks that can make step shapes (also known as triangular numbers). Their glasses are step shapes in the same colours as the step squads they represent, and all of them that are greater than Ten (except Three Hundred, who has not appeared physically) wear them. One, Three, Six, and Ten only wear step-shaped masks while they are actively being step squads due to that not being their primary characteristic. Many of them also wear boots the same colours as their blocks, but One, Three, Six, Ten, and Fifty-Five do not. Members of this club are [[One (character)|One]], [[Three (character)|Three]], [[Six (character)|Six]], [[Ten (character)|Ten]], [[Fifteen (character)|Fifteen]], [[Twenty-One]], [[Twenty-Eight]], [[Thirty-Six]], [[Forty-Five]] and [[Fifty-Five]].

This club's formula is <math>\frac{n(n+1)}{2}</math>, <math>\frac{n^{2}+n}{2}</math>, or <math>\sum_{x=1}^{n} x</math>, and it is [https://oeis.org/A000217 A000217] in the OEIS.

====Gallery====
<gallery>
Step squad badge.png|The badge
Step squad club.png|One, Three, Six, Ten. Fifteen and Twenty One with their badges.
</gallery>

====Member gallery====
{{Scroll box|height=270px|border={{CC|5}}|weight=2|text=
<gallery>
Step_Squad_One.PNG|One (({{NBCN|1}} x ({{NBCN|1}} + {{NBCN|1}}) ) / {{NBCN|2}})
Stepsquadthree.png|Three (({{NBCN|2}} x ({{NBCN|2}} + {{NBCN|1}}) ) / {{NBCN|2}})
Six step squad.png|Six (({{NBCN|3}} x ({{NBCN|3}} + {{NBCN|1}}) ) / {{NBCN|2}})
Step Squad Ten.PNG|Ten (({{NBCN|4}} x ({{NBCN|4}} + {{NBCN|1}}) ) / {{NBCN|2}})
1+2+3+4+5.png|Fifteen (({{NBCN|5}} x ({{NBCN|5}} + {{NBCN|1}}) ) / {{NBCN|2}})
1+2+3+4+5+6.png|Twenty-One (({{NBCN|6}} x ({{NBCN|6}} + {{NBCN|1}}) ) / {{NBCN|2}})
28stepbetter.PNG|Twenty-Eight (({{NBCN|7}} x ({{NBCN|7}} + {{NBCN|1}}) ) / {{NBCN|2}})
Ahyes36thestepsquadyay.png|Thirty-Six (({{NBCN|8}} x ({{NBCN|8}} + {{NBCN|1}}) ) / {{NBCN|2}})
45stepsquadbetter.png|Forty-Five (({{NBCN|9}} x ({{NBCN|9}} + {{NBCN|1}}) ) / {{NBCN|2}})
Fifty-Five Info Box.png|Fifty-Five (({{NBCN|10}} x ({{NBCN|10}} + {{NBCN|1}}) ) / {{NBCN|2}})
</gallery>}}

</tabber>

==Cubic Sequences==
<tabber>
|-|Cube Club=
''Founder: [[Twenty-Seven]]''

Cube Club is for cube numbers. Currently, its only members are [[One (character)|One]], [[Eight (character)|Eight]], [[Twenty-Seven]] and [[Sixty-Four]].

This club's formula is <math>n^3</math>, and it is [https://oeis.org/A000578 A000578] in the OEIS.

====Gallery====
<gallery>
Cube Club Badge.png|The badge
Cube 27.JPG|Twenty-Seven with the badge.
</gallery>

====Member gallery====

{{Scroll box|height=270px|border={{CC|7}}|weight=2|text=
<gallery>
One with a cube icon.png|One ({{NBCN|1}} ^ {{NBCN|3}})
Cubeeightbetter.PNG|Eight ({{NBCN|2}} ^ {{NBCN|3}})
New27.png|Twenty-Seven ({{NBCN|3}} ^ {{NBCN|3}})
64cube.png|Sixty-Four ({{NBCN|4}} ^ {{NBCN|3}})
</gallery>}}
</tabber>

==Factorization Clubs==
<tabber>
|-|Prime Club=
''Founder: [[Twenty-Nine]]''

Prime Club is for prime Numberblocks; ones that can only make prime positions (meaning being one block wide by their own number tall, and one block tall by their number wide) and no others. [[Twenty-Three]], [[Twenty-Nine]], and [[Thirty-One]] are members of this club. [[Two (character)|Two]], [[Three (character)|Three]], [[Five (character)|Five]], [[Seven (character)|Seven]], [[Eleven (character)|Eleven]], [[Thirteen (character)|Thirteen]], [[Seventeen (character)|Seventeen]], and [[Nineteen (character)|Nineteen]] are also in the club, but they have never been seen with the badge.

This club has no formula, but it is [https://oeis.org/A000040 A000040] in the OEIS.

====Gallery====
<gallery>
Prime club badge.png|The badge.
Prime club.png|Twenty Three with the badge.
</gallery>

====Member gallery====

=====Horizontal=====
{{Scroll box|height=270px|border={{CC|9}}|weight=2|text=
<gallery>
2v.PNG|Two ({{NBCN|2}})
3 horizontal.png|Three ({{NBCN|3}})
Horizontal 5, Now With Limbs.jpeg|Five (({{NBCN|6}} x {{NBCN|1}}) - {{NBCN|1}})
Horizontal 7 with Different Limbs.jpeg|Seven (({{NBCN|6}} x {{NBCN|1}}) + {{NBCN|1}})
11.PNG|Eleven (({{NBCN|6}} x {{NBCN|2}}) - {{NBCN|1}})
DE8C7E62-3007-47CD-A76C-5E0686307535.jpeg|Thirteen (({{NBCN|6}} x {{NBCN|2}}) + {{NBCN|1}})
5646975A-B1A0-4936-9BD4-BA568F98563F.jpeg|Seventeen (({{NBCN|6}} x {{NBCN|3}}) - {{NBCN|1}})
2023an19x1.jpg|Nineteen (({{NBCN|6}} x {{NBCN|3}}) + {{NBCN|1}})
23horizontalbetter.PNG|Twenty-Three (({{NBCN|6}} x {{NBCN|4}}) - {{NBCN|1}})
2023an29x1.jpg|Twenty-Nine (({{NBCN|6}} x {{NBCN|5}}) - {{NBCN|1}})
Seightera13.jpg|Thirty-One (({{NBCN|6}} x {{NBCN|5}}) + {{NBCN|1}})
</gallery>}}



=====Vertical=====
{{Scroll box|height=270px|border={{CC|9}}|weight=2|text=
<gallery>
Two.png|Two ({{NBCN|2}})
Three.png|Three ({{NBCN|3}})
5 better.png|Five (({{NBCN|6}} x {{NBCN|1}}) - {{NBCN|1}})
Better.png|Seven (({{NBCN|6}} x {{NBCN|1}}) + {{NBCN|1}})
New vertical 11.jpeg|Eleven (({{NBCN|6}} x {{NBCN|2}}) - {{NBCN|1}})
New_Vertical_Thirteen.png|Thirteen (({{NBCN|6}} x {{NBCN|2}}) + {{NBCN|1}})
17vertfull.PNG|Seventeen (({{NBCN|6}} x {{NBCN|3}}) - {{NBCN|1}})
19vertfull.PNG|Nineteen (({{NBCN|6}} x {{NBCN|3}}) + {{NBCN|1}})
23vertbetter.PNG|Twenty-Three (({{NBCN|6}} x {{NBCN|4}}) - {{NBCN|1}})
2023an1x29.jpg|Twenty-Nine (({{NBCN|6}} x {{NBCN|5}}) - {{NBCN|1}})
Seightera1.jpg|Thirty-One (({{NBCN|6}} x {{NBCN|5}}) + {{NBCN|1}})
</gallery>}}


|-|Super Rectangle Club=
''Founder: [[Twelve (character)|Twelve]]''

Super Rectangle Club is for Numberblocks that can make six or more rectangle arrays.<ref>[[File:Screenshot_2025-05-09_132955.png|100px]]</ref> They wear [[Array Display|Array Displays]]. Members seen with the club badge are [[Twelve (character)|Twelve]], [[Eighteen (character)|Eighteen]], [[Twenty (character)|Twenty]], [[Twenty-Four]], [[Twenty-Eight]] and [[Thirty-Two]]. Other members of the club include [[Thirty]], [[Thirty-Six]], [[Forty]], [[Forty-Two]], [[Forty-Five]], [[Forty-Eight]], [[Fifty (character)|Fifty]], [[Fifty-Four]], [[Fifty-Six]], [[Sixty]], [[Sixty-Three]], [[Sixty-Four]], [[Seventy]], [[Seventy-Two]], [[Eighty]], [[Ninety]], and [[One Hundred (character)|One Hundred]], but were never seen with the club badge.


The formulas for six factored numbers is <math>p^2 * q</math> or <math>p^5</math>, where p and q are prime numbers, super rectangles need at least six factors. 

====Gallery====
<gallery>
Super rectangle badge.png|The badge.
Super rectangle club.jpg|Twelve, Eighteen, Twenty, Twenty-Four and Twenty-Eight with the badge.
</gallery>

====Member gallery====

{{Scroll box|height=270px|border={{CC|2}}|weight=2|text= Twelve's Rectangles (6/6):
<gallery>
TwelveTall.png|({{NBCN|1}} x {{NBCN|12}})
2x6new.jpeg|({{NBCN|2}} x {{NBCN|6}})
TwelveS4.png|({{NBCN|3}} x {{NBCN|4}})
4x3new.jpeg|({{NBCN|4}} x {{NBCN|3}})
6x2new.jpeg|({{NBCN|6}} x {{NBCN|2}})
12horizontal.jpeg|({{NBCN|12}} x {{NBCN|1}})
</gallery>}}

{{Scroll box|height=270px|border={{CC|8}}|weight=2|text= Eighteen's Rectangles (6/6):
<gallery>
1x18 With Limbs.png|({{NBCN|1}} x {{NBCN|18}})
182x9withlimbs.jpeg|({{NBCN|2}} x {{NBCN|9}})
Eighteen from numberblocks by alexiscurry ddmkcz1-fullview.png|({{NBCN|3}} x {{NBCN|6}})
186x3withlimbs.jpeg|({{NBCN|6}} x {{NBCN|3}})
18´s 9x2.png|({{NBCN|9}} x {{NBCN|2}})
18.PNG|({{NBCN|18}} x {{NBCN|1}})
</gallery>}}

{{Scroll box|height=270px|border={{CC|20}}|weight=2|text= Twenty's Rectangles (6/6):
<gallery>
Bandicam 2019-07-08 01-30-31-452.jpg|({{NBCN|1}} x {{NBCN|20}})
OfficialTwenty.png|({{NBCN|2}} x {{NBCN|10}})
4x5new.PNG|({{NBCN|4}} x {{NBCN|5}})
5x4.PNG|({{NBCN|5}} x {{NBCN|4}})
Bandicam 2019-07-08 01-29-04-051.jpg|({{NBCN|10}} x {{NBCN|2}})
20H.jpg|({{NBCN|20}} x {{NBCN|1}})
</gallery>}}

{{Scroll box|height=270px|border={{CC|4}}|weight=2|text= Twenty-Four's Rectangles (8/8):
<gallery>
1x24.PNG|({{NBCN|1}} x {{NBCN|24}})
2x12.PNG|({{NBCN|2}} x {{NBCN|12}})
Untitled317 20210322174421.png|({{NBCN|3}} x {{NBCN|8}})
4x6better.jpeg|({{NBCN|4}} x {{NBCN|6}})
24 i guess.PNG|({{NBCN|6}} x {{NBCN|4}})
8x3.PNG|({{NBCN|8}} x {{NBCN|3}})
12x2.PNG|({{NBCN|12}} x {{NBCN|2}})
24horizontal.PNG|({{NBCN|24}} x {{NBCN|1}})
</gallery>}}

{{Scroll box|height=270px|border={{CC|8}}|weight=2|text= Twenty-Eight's Rectangles (6/6):
<gallery>
28tall.jpg|({{NBCN|1}} x {{NBCN|28}})
Twenty-Eight Even Top (better).jpeg|({{NBCN|2}} x {{NBCN|14}})
Satenar7.png|({{NBCN|4}} x {{NBCN|7}})
7x4.PNG|({{NBCN|7}} x {{NBCN|4}})
28 14×2.jpg|({{NBCN|14}} x {{NBCN|2}})
28-28×1.jpg|({{NBCN|28}} x {{NBCN|1}})
</gallery>}}

{{Scroll box|height=270px|border={{CC|30}}|weight=2|text= Thirty's Rectangles (8/8):
<gallery>
30tall.jpg|({{NBCN|1}} x {{NBCN|30}})
Static-assets-upload1195351369020662099.jpg|({{NBCN|2}} x {{NBCN|15}})
Thirty-0.png|({{NBCN|3}} x {{NBCN|10}})
Thirty5x6better.png|({{NBCN|5}} x {{NBCN|6}})
IMG-2329.jpg|({{NBCN|6}} x {{NBCN|5}})
10x3better.png|({{NBCN|10}} x {{NBCN|3}})
30 15x2.jpg|({{NBCN|15}} x {{NBCN|2}})
30horizons.jpg|({{NBCN|30}} x {{NBCN|1}})
</gallery>}}

{{Scroll box|height=270px|border={{CC|2}}|weight=2|text= Thirty-Two's Rectangles (6/6):
<gallery>
32vert.png|({{NBCN|1}} x {{NBCN|32}})
32_2x16.jpg|({{NBCN|2}} x {{NBCN|16}})
32better.png|({{NBCN|4}} x {{NBCN|8}})
5B5CBED7-B4AF-4AC9-ABE2-632E8DF9870B.jpeg|({{NBCN|8}} x {{NBCN|4}})
32 16x2.jpg|({{NBCN|16}} x {{NBCN|2}})
32H.jpg|({{NBCN|32}} x {{NBCN|1}})
</gallery>}}

{{Scroll box|height=270px|border={{CC|6}}|weight=2|text= Thirty-Six's Rectangles (9/9):
<gallery>
36Tall.jpg|({{NBCN|1}} x {{NBCN|36}})
36 2.jpg|({{NBCN|2}} x {{NBCN|18}})
36 3.jpg|({{NBCN|3}} x {{NBCN|12}})
Fourbynine.png|({{NBCN|4}} x {{NBCN|9}})
36squarebetter.png|({{NBCN|6}} x {{NBCN|6}})
Ninebyfour.png|({{NBCN|9}} x {{NBCN|4}})
36 12.jpg|({{NBCN|12}} x {{NBCN|3}})
36 18.jpg|({{NBCN|18}} x {{NBCN|2}})
36H.jpg|({{NBCN|36}} x {{NBCN|1}})
</gallery>}}

{{Scroll box|height=270px|border={{CC|40}}|weight=2|text= Forty's Rectangles (8/8):
<gallery>
40 really TALL.jpg|({{NBCN|1}} x {{NBCN|40}})
Static-assets-upload4341491615750582552.jpg|({{NBCN|2}} x {{NBCN|20}})
Nbworld40.PNG|({{NBCN|4}} x {{NBCN|10}})
IMG 20190805 073239 552.JPG|({{NBCN|5}} x {{NBCN|8}})
IMG-2334.jpg|({{NBCN|8}} x {{NBCN|5}})
Tenbyfour.png|({{NBCN|10}} x {{NBCN|4}})
40-20×2.jpg|({{NBCN|20}} x {{NBCN|2}})
40-40×1.jpg|({{NBCN|40}} x {{NBCN|1}})
</gallery>}}

{{Scroll box|height=270px|border={{CC|2}}|weight=2|text= Forty-Two's Rectangles (2/8):
<gallery>
426x7.PNG|({{NBCN|6}} x {{NBCN|7}})
427x6.PNG|({{NBCN|7}} x {{NBCN|6}})
</gallery>}}

{{Scroll box|height=270px|border={{CC|5}}|weight=2|text= Forty-Five's Rectangles (2/6):
<gallery>
455x9better.PNG|({{NBCN|5}} x {{NBCN|9}})
9 by 5.png|({{NBCN|9}} x {{NBCN|5}})
</gallery>}}

{{Scroll box|height=270px|border={{CC|8}}|weight=2|text= Forty-Eight's Rectangles (2/10):
<gallery>
486x8.PNG|({{NBCN|6}} x {{NBCN|8}})
48 transparent.png|({{NBCN|8}} x {{NBCN|6}})
</gallery>}}

{{Scroll box|height=270px|border={{CC|50}}|weight=2|text= Fifty's Rectangles (3/6):
<gallery>
Static-assets-upload6832223224624232552.jpg|({{NBCN|2}} x {{NBCN|25}})
Nbworld50.PNG|({{NBCN|5}} x {{NBCN|10}})
IMG-2331.jpg|({{NBCN|10}} x {{NBCN|5}})
</gallery>}}

{{Scroll box|height=270px|border={{CC|4}}|weight=2|text= Fifty-Four's Rectangles (2/8):
<gallery>
546x9.PNG|({{NBCN|6}} x {{NBCN|9}})
54 transparent-2.png|({{NBCN|9}} x {{NBCN|6}})
</gallery>}}

{{Scroll box|height=270px|border={{CC|9}}|weight=2|text= Fifty-Six's Rectangles (2/8):
<gallery>
567x8.PNG|({{NBCN|7}} x {{NBCN|8}})
56 facebook image.png|({{NBCN|8}} x {{NBCN|7}})
</gallery>}}

{{Scroll box|height=270px|border={{CC|60}}|weight=2|text= Sixty's Rectangles (6/12):
<gallery>
Static-assets-upload8955402869547699614.jpg|({{NBCN|3}} x {{NBCN|20}})
5x12.PNG|({{NBCN|5}} x {{NBCN|12}})
60better.png|({{NBCN|6}} x {{NBCN|10}})
10x6.png|({{NBCN|10}} x {{NBCN|6}})
12X5.PNG|({{NBCN|12}} x {{NBCN|5}})
Purple Macaroni.png|({{NBCN|20}} x {{NBCN|3}})
</gallery>}}

{{Scroll box|height=270px|border={{CC|3}}|weight=2|text= Sixty-Three's Rectangles (2/6):
<gallery>
63 transparent.png|({{NBCN|7}} x {{NBCN|9}})
639x7.PNG|({{NBCN|9}} x {{NBCN|7}})
</gallery>}}

{{Scroll box|height=270px|border={{CC|4}}|weight=2|text= Sixty-Four's Rectangles (3/7):
<gallery>
Static-assets-upload7864840573553160648.jpg|({{NBCN|2}} x {{NBCN|32}})
SuperRECTANGLE.png|({{NBCN|4}} x {{NBCN|16}})
Sixty-Fouroffical.PNG|({{NBCN|8}} x {{NBCN|8}})
</gallery>}}

{{Scroll box|height=270px|border={{CC|70}}|weight=2|text= Seventy's Rectangles (3/8):
<gallery>
Static-assets-upload12118873492014341603.jpg|({{NBCN|5}} x {{NBCN|14}})
70 image.png|({{NBCN|7}} x {{NBCN|10}})
10x7.jpeg|({{NBCN|10}} x {{NBCN|7}})
</gallery>}}

{{Scroll box|height=270px|border={{CC|2}}|weight=2|text= Seventy-Two's Rectangles (5/12):
<gallery>
723x24.PNG|({{NBCN|3}} x {{NBCN|24}})
72 transparent new.png|({{NBCN|6}} x {{NBCN|12}})
728x9.PNG|({{NBCN|8}} x {{NBCN|9}})
729x8.PNG|({{NBCN|9}} x {{NBCN|8}})
72 fan alt.PNG|({{NBCN|12}} x {{NBCN|6}})
</gallery>}}

{{Scroll box|height=270px|border={{CC|80}}|weight=2|text= Eighty's Rectangles (4/10):
<gallery>
4x20.PNG|({{NBCN|4}} x {{NBCN|20}})
80fiveblockswide.PNG|({{NBCN|5}} x {{NBCN|16}})
80fan.PNG|({{NBCN|8}} x {{NBCN|10}})
8010x8.PNG|({{NBCN|10}} x {{NBCN|8}})
</gallery>}}

{{Scroll box|height=270px|border={{CC|90}}|weight=2|text= Ninety's Rectangles (3/12):
<gallery>
90 nb.png|({{NBCN|9}} x {{NBCN|10}})
Static-assets-upload12211429740033353020.jpg|({{NBCN|10}} x {{NBCN|9}})
Static-assets-upload14586459206679446825.jpg|({{NBCN|30}} x {{NBCN|3}})
</gallery>}}

{{Scroll box|height=270px|border={{CC|100}}|weight=2|text= One-Hundred's Rectangles (4/9):
<gallery>
CF411DB0-BCCC-467A-8614-5FF80C6E341A.jpeg|({{NBCN|1}} x {{NBCN|100}})
Static-assets-upload1571523799055191842.jpg|({{NBCN|4}} x {{NBCN|25}})
Static-assets-upload10139151345598805140.jpg|({{NBCN|5}} x {{NBCN|20}})
One Hundred Better.png|({{NBCN|10}} x {{NBCN|10}})
</gallery>}}

|-|Super Duper Rectangle Club=
Super Duper Rectangle Club is for Numberblocks that can make eight arrays or more. Currently, [[Twenty-Four]] is the only member of this club who was actually seen with the badge, [[Thirty-Six]] is also a Super Duper Rectangle member as stated in his [https://www.x.com/numberblocks/status/1423594096480903168 Fact File]. [[Thirty]], [[Forty]], [[Forty-Two]], [[Forty-Eight]], [[Fifty-Four]], [[Fifty-Six]], [[Seventy]], and [[Eighty]] are also in the club, but were never seen with the badge. [[One Hundred (character)|One Hundred]] has nine factors but is probably in the Super Duper Rectangle Club because the name would probably change at ten arrays, and she only has one more ray than eight, not two more. It is debatable whether [[Sixty]], [[Ninety]] and [[Seventy-Two]] are in the club since they all have at least twelve factors, but they might be judging by the fact that Twenty-Four was also seen with the Super Rectangle Club badge.
<gallery>
24 with SDR badge.png|Twenty-Four with her badge.
Sdr badge.png|The badge.
</gallery>
</tabber>

==Limited Sequences==
<tabber>
|-|Roaring Twenties=
''Founder: [[Twenty (character)|Twenty]]''

The Roaring Twenties is for Numberblocks ranging from [[Twenty (character)|Twenty]] to [[Twenty-Nine]].

This club's formula is <math>n</math>, where <math>n\in\N</math> and <math>20 \leq n < 30</math>, and it is not in the OEIS as it is a limited sequence.

====Gallery====
<gallery>
Twentiesbadge.PNG|The badge
20s 20 21 22 23 24 25 26 27 28 29.JPG|20 - 29 with the badge, along with other badges.
</gallery>

====Member gallery====

{{Scroll box|height=270px|border={{CC|20}}|weight=2|text=
<gallery>
OfficialTwenty.png|Twenty ({{NBCN|19}} < {{NBCN|20}} < {{NBCN|30}})
Newarr1.PNG|Twenty-One({{NBCN|19}} < {{NBCN|21}} < {{NBCN|30}})
0DEFB6B3-CE12-454D-AA8C-AC34655E2A61.jpeg|Twenty-Two ({{NBCN|19}} < {{NBCN|22}} < {{NBCN|30}})
Nbworld23.PNG|Twenty-Three ({{NBCN|19}} < {{NBCN|23}} < {{NBCN|30}})
Twentyplusfour.PNG|Twenty-Four ({{NBCN|19}} < {{NBCN|24}} < {{NBCN|30}})
IMG 20190805 102045 666.JPG|Twenty-Five ({{NBCN|19}} < {{NBCN|25}} < {{NBCN|30}})
Twentyplussix.PNG|Twenty-Six ({{NBCN|19}} < {{NBCN|26}} < {{NBCN|30}})
Twentyplusseven.PNG|Twenty-Seven ({{NBCN|19}} < {{NBCN|27}} < {{NBCN|30}})
Twentypluseight.PNG|Twenty-Eight ({{NBCN|19}} < {{NBCN|28}} < {{NBCN|30}})
Nbworld29.PNG|Twenty-Nine ({{NBCN|19}} < {{NBCN|29}} < {{NBCN|30}})
</gallery>}}
</tabber>
==References==
<references />

[[Category:Clubs]]
[[Category:Lists]]
{{Lists}}