List of Numberblock Clubs

General

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Clubs are groups of Numberblocks they join if they have a certain property (e.g. being a square number, a triangular number, a cube number, a prime number, etc.). The first clubs ever started were Odds and Evens, in 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 is the only Numberblock who isn't in any clubs.

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, $n \in \N$.

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

Linear Sequences

Multiples Clubs

• Made of Ones
• Even Tops
• Three Club
• Square-With-a-Hole-in-Club
• Rainbow Sevens Club
• Football Club
• Falling Apart Club

Founder: One

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

This club's formula is just $n$, and it is A000027 in the On-Line Encyclopedia of Integer Sequences (OEIS).

Gallery

The badge

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.

One (1 × 1) Two (2 × 1) Three (3 × 1) Four (4 × 1) Five (5 × 1) Six (6 × 1) Seven (7 × 1) Eight (8 × 1) Nine (9 × 1) Ten (10 × 1) Eleven (11 × 1) Twelve (12 × 1) Thirteen (13 × 1) Fourteen (14 × 1) Fifteen (15 × 1) Sixteen (16 × 1) Seventeen (17 × 1) Eighteen (18 × 1) Nineteen (Faceless) (19 × 1) Twenty (20 × 1) Twenty-Two (Faceless) (22 × 1) Twenty-Three (23 × 1) Twenty-Four (24 × 1) Twenty-Eight (28 × 1) Twenty-Nine (Faceless) (29 × 1) Thirty (30 × 1) Thirty-One (Compound) (31 × 1) Thirty-Two (32 × 1) Thirty-Five (Faceless) (35 × 1) Thirty-Six (36 × 1) Forty (40 × 1)

Vertical

These are the arrangements where the factors are stacked like a tower. The members will get taller.

One (1 × 1) Two (1 × 2) Three (1 × 3) Four (1 × 4) Five (1 × 5) Six (1 × 6) Seven (1 × 7) Eight (1 × 8) Nine (1 × 9) Ten (1 × 10) Eleven (1 × 11) Twelve (1 × 12) Thirteen (1 × 13) Fourteen (1 × 14) Fifteen (1 × 15) Sixteen (1 × 16) Seventeen (1 × 17) Eighteen (1 × 18) Nineteen (1 × 19) Twenty (1 × 20) Twenty-Two (Faceless) (1 × 22) Twenty-Three (1 × 23) Twenty-Four (1 × 24) Twenty-Eight (1 × 28) Twenty-Nine (Faceless) (1 × 29) Thirty (1 × 30) Thirty-One (Compound) (1 × 31) Thirty-Two (1 × 32) Thirty-Five (Faceless) (1 × 35) Thirty-Six (1 × 36) Forty (1 × 40) One Hundred (1 × 100)

Founder: 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, Four, Six, Eight, Ten, Twelve, Fourteen, Sixteen, Eighteen, 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, Two Hundred, Three Hundred, Nine Hundred and One Thousand.

This club's formula is $2n$, and it is A299174 in the OEIS.

Gallery

The badge

The odds and evens in their debut episode.

Member gallery

Horizontal

Two (1 × 2) Four (2 × 2) Six (3 × 2) Eight (4 × 2) Ten (5 × 2) Twelve (6 × 2) Fourteen (7 × 2) Sixteen (8 × 2) Eighteen (9 × 2) Twenty (10 × 2) Twenty-Two (11 × 2) Twenty-Four (12 × 2) Twenty-Six (13 × 2) Twenty-Eight (14 × 2) Thirty (15 × 2) Thirty-Two (16 × 2) Thirty-Six (18 × 2) Forty (20 × 2)

Vertical

Two (2 × 1) Four (2 × 2) Six (2 × 3) Eight (2 × 4) Ten (2 × 5) Twelve (2 × 6) Fourteen (2 × 7) Sixteen (2 × 8) Eighteen (2 × 9) Twenty (2 × 10) Twenty-Two (2 × 11) Twenty-Four (2 × 12) Twenty-Six (2 × 13) Twenty-Eight (2 × 14) Thirty (2 × 15) Thirty-Two (2 × 16) Thirty-Six (2 × 18) Forty (2 × 20) Fifty (2 × 25) Sixty-Four (2 × 32)

Founder: 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, Six, Nine, Twelve, Fifteen, 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 $3n$, and it is A008585 in the OEIS.

Gallery

The badge

Member gallery

Horizontal

Three (1 × 3) Six (2 × 3) Nine (3 × 3) Twelve (4 × 3) Fifteen (5 × 3) Eighteen (6 × 3) Twenty-One (7 × 3) Twenty-Four (8 × 3) Twenty-Seven (9 × 3) Thirty (10 × 3) Thirty-Six (12 × 3) Sixty (20 × 3) Ninety (30 × 3)

Vertical

Three (3 × 1) Six (3 × 2) Nine (3 × 3) Twelve (3 × 4) Fifteen (3 × 5) Eighteen (3 × 6) Twenty-One (3 × 7) Twenty-Four (3 × 8) Twenty-Seven (3 × 9) Thirty (3 × 10) Thirty-Six (3 × 12) Sixty (3 × 20) Seventy-Two (3 × 24)

Founder: 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 himself). Badges of this club were given to Eight, Twelve, and Sixteen. Other members of this club are Twenty, Twenty-Four, Twenty-Eight, Thirty-Two, Thirty-Six, Forty, Forty-Eight, Fifty-Six, Sixty, Sixty-Four, Seventy-Two, Eighty, One Hundred, Two Hundred, Three Hundred, and Nine Hundred. By the nature of this club, all multiples of four above Four himself will be able to make a square with a hole in.

This club's formula is $4(n+1)$or $4n+4$, and it is A192544 in the OEIS.

Gallery

Twenty-Nine holding the badge.

Eight with the badge.

Twelve with the badge.

Sixteen with the badge.

Member gallery

Eight ((4 x 1) + 4) Twelve ((4 x 2) + 4) Sixteen ((4 x 3) + 4) Twenty ((4 x (4) + 4) Twenty-Four ((4 x 5) + 4) Twenty-Eight ((4 x 6) + 4) Thirty-Two ((4 x 7) + 4) Thirty-Six ((4 x 8) + 4)

Founder: Seven

Rainbow Sevens Club is for Numberblocks that are multiples of seven. The members of this club seen with the badge are Seven, 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 $7n$, and it is A182341 in the OEIS.

Gallery

The badge

7, 14, 21 and 28 with the badge.

Member gallery

Vertical

Seven (1 × 7) Fourteen (2 × 7) Twenty-One (3 × 7) Twenty-Eight (4 × 7) Thirty-Five (5 × 7) Forty-Two (6 × 7) Forty-Nine (7 × 7) Fifty-Six (8 × 7) Sixty-Three (9 × 7) Seventy (10 × 7)

Horizontal

Seven (7 × 1) Fourteen (7 × 2) Twenty-One (7 × 3) Twenty-Eight (7 × 4) Thirty-Five (7 × 5) Forty-Two (7 × 6) Forty-Nine (7 × 7) Fifty-Six (7 × 8) Sixty-Three (7 × 9) Seventy (7 × 10)

Founder: Eleven

The League of Elevens is for Numberblocks that are multiples of eleven. Members of this club include 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 $11n$, and it is A008593 in the OEIS.

Gallery

The badge

Eleven and Twenty Two with footballs and the badges.

Member gallery

Horizontal

Eleven (11 × 1) Twenty-Two (11 × 2) Fifty-Five (11 × 5)

Vertical

Eleven (1 × 11) Twenty-Two (2 × 11) Fifty-Five (5 × 11)

Founder: Thirteen

The Undercover Thirteens Club is for multiples of Thirteen, like 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 2023, “Falling Apart Club" is now its official name.

This club's formula is $13n$, and it is A008595 in the OEIS.

Gallery

The badge

26 with the badge.

Member gallery

Horizontal

Thirteen (13 × 1) Twenty-Six (13 × 2)

Vertical

Thirteen (1 × 13) Twenty-Six (2 × 13)

Remainder Clubs

• Odd Blocks
• One-Enders Club
• Nine-Enders Club

Founder: 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, Three, Five, Seven, Nine, Eleven, Thirteen, Fifteen, Seventeen, 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 $2n-1$, and it is A005408 in the OEIS.

Gallery

The badge

The odds and evens in their debut episode.

Member gallery

One ((2 x 1) - 1) Three ((2 x 2) - 1) Five ((2 x 3) - 1) Seven ((2 x 4) - 1) Nine ((2 x 5) - 1) Eleven ((2 x 6) - 1) Thirteen ((2 x 7) - 1) Fifteen ((2 x 8) - 1) Seventeen ((2 x 9) - 1) Nineteen ((2 x 10) - 1) Twenty-One ((2 x 11) - 1) Twenty-Three ((2 x 12) - 1) Twenty-Five ((2 x 13) - 1) Twenty-Seven ((2 x 14) - 1) Twenty-Nine ((2 x 15) - 1) Thirty-One in his odd block form ((2 x 16) - 1)

Founder: One (Most likely)

The One-Enders Club is a club for Numberblocks that end in a one. Members of this club include One, 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 this video.

This club's formula is $10n-9$, and it is A017281 in the OEIS.

Gallery

The badge

Proof of existence

Member gallery

One ((10 x 1) - 9) Eleven ((10 x 2) - 9) Twenty-One ((10 x 3) - 9) Thirty-One ((10 x 4) - 9) Eighty-One ((10 x 9) - 9)

Founder: Twenty-Nine

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

This club's formula is $10n-1$, and it is A017377 in the OEIS.

Gallery

The badge

9, 19 and 29 with the badge, along with 9 having a square club badge.

Member gallery

Nine ((10 x 1) - 1) Nineteen ((10 x 2) - 1) Twenty-Nine ((10 x 3) - 1) Forty-Nine ((10 x 5) - 1)

Quadratic Sequences

• Square Club
• Step Squad Club

Founder: Sixteen

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

The club's formula is $n^2$, and it is A000290 in the OEIS.

Gallery

The badge.

One with the badge.

Four with the badge.

Nine with the badge.

Sixteen with the badge.

Twenty-Five with the badge.

Member gallery

One (1 ^ 2) Four (2 ^ 2) Nine (3 ^ 2) Sixteen (4 ^ 2) Twenty-Five (5 ^ 2) Thirty-Six (6 ^ 2) Forty-Nine (7 ^ 2) Sixty-Four (8 ^ 2) Eighty-One (9 ^ 2) One Hundred (10 ^ 2)

Founder: 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, Three, Six, Ten, Fifteen, Twenty-One, Twenty-Eight, Thirty-Six, Forty-Five and Fifty-Five.

This club's formula is $\frac{n(n+1)}{2}$, $\frac{n^2+n}{2}$, or $\sum_{x=1}^{n} x$, and it is A000217 in the OEIS.

Gallery

The badge

One, Three, Six, Ten. Fifteen and Twenty One with their badges.

Member gallery

One ((1 x (1 + 1) ) / 2) Three ((2 x (2 + 1) ) / 2) Six ((3 x (3 + 1) ) / 2) Ten ((4 x (4 + 1) ) / 2) Fifteen ((5 x (5 + 1) ) / 2) Twenty-One ((6 x (6 + 1) ) / 2) Twenty-Eight ((7 x (7 + 1) ) / 2) Thirty-Six ((8 x (8 + 1) ) / 2) Forty-Five ((9 x (9 + 1) ) / 2) Fifty-Five ((10 x (10 + 1) ) / 2)

Cubic Sequences

• Cube Club

Founder: Twenty-Seven

Cube Club is for cube numbers. Currently, its only members are One, Eight, Twenty-Seven and Sixty-Four.

This club's formula is $n^3$, and it is A000578 in the OEIS.

Gallery

The badge

Twenty-Seven with the badge.

Member gallery

One (1 ^ 3) Eight (2 ^ 3) Twenty-Seven (3 ^ 3) Sixty-Four (4 ^ 3)

Factorization Clubs

• Prime Club
• Super Rectangle Club
• Super Duper Rectangle 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, Three, Five, Seven, Eleven, Thirteen, Seventeen, and Nineteen are also in the club, but they have never been seen with the badge.

This club has no formula, but it is A000040 in the OEIS.

Gallery

The badge.

Twenty Three with the badge.

Member gallery

Horizontal

Two (2) Three (3) Five ((6 x 1) - 1) Seven ((6 x 1) + 1) Eleven ((6 x 2) - 1) Thirteen ((6 x 2) + 1) Seventeen ((6 x 3) - 1) Nineteen ((6 x 3) + 1) Twenty-Three ((6 x 4) - 1) Twenty-Nine ((6 x 5) - 1) Thirty-One ((6 x 5) + 1)

Vertical

Two (2) Three (3) Five ((6 x 1) - 1) Seven ((6 x 1) + 1) Eleven ((6 x 2) - 1) Thirteen ((6 x 2) + 1) Seventeen ((6 x 3) - 1) Nineteen ((6 x 3) + 1) Twenty-Three ((6 x 4) - 1) Twenty-Nine ((6 x 5) - 1) Thirty-One ((6 x 5) + 1)

Founder: Twelve

Super Rectangle Club is for Numberblocks that can make six or more rectangle arrays. They wear Array Displays. Members seen with the club badge are Twelve, Eighteen, 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, Fifty-Four, Fifty-Six, Sixty, Sixty-Three, Sixty-Four, Seventy, Seventy-Two, Eighty, Ninety, and One Hundred, but were never seen with the club badge.

The formulas for six factored numbers is $p^{2}*q$ or $p^{5}$, where p and q are prime numbers, super rectangles need at least six factors.

Gallery

The badge.

Twelve, Eighteen, Twenty, Twenty-Four and Twenty-Eight with the badge.

Member gallery

Twelve's Rectangles (6/6): (1 x 12) (2 x 6) (3 x 4) (4 x 3) (6 x 2) (12 x 1)

Eighteen's Rectangles (6/6): (1 x 18) (2 x 9) (3 x 6) (6 x 3) (9 x 2) (18 x 1)

Twenty's Rectangles (6/6): (1 x 20) (2 x 10) (4 x 5) (5 x 4) (10 x 2) (20 x 1)

Twenty-Four's Rectangles (8/8): (1 x 24) (2 x 12) (3 x 8) (4 x 6) (6 x 4) (8 x 3) (12 x 2) (24 x 1)

Twenty-Eight's Rectangles (6/6): (1 x 28) (2 x 14) (4 x 7) (7 x 4) (14 x 2) (28 x 1)

Thirty's Rectangles (8/8): (1 x 30) (2 x 15) (3 x 10) (5 x 6) (6 x 5) (10 x 3) (15 x 2) (30 x 1)

Thirty-Two's Rectangles (6/6): (1 x 32) (2 x 16) (4 x 8) (8 x 4) (16 x 2) (32 x 1)

Thirty-Six's Rectangles (9/9): (1 x 36) (2 x 18) (3 x 12) (4 x 9) (6 x 6) (9 x 4) (12 x 3) (18 x 2) (36 x 1)

Forty's Rectangles (8/8): (1 x 40) (2 x 20) (4 x 10) (5 x 8) (8 x 5) (10 x 4) (20 x 2) (40 x 1)

Forty-Two's Rectangles (2/8): (6 x 7) (7 x 6)

Forty-Five's Rectangles (2/6): (5 x 9) (9 x 5)

Forty-Eight's Rectangles (2/10): (6 x 8) (8 x 6)

Fifty's Rectangles (3/6): (2 x 25) (5 x 10) (10 x 5)

Fifty-Four's Rectangles (2/8): (6 x 9) (9 x 6)

Fifty-Six's Rectangles (2/8): (7 x 8) (8 x 7)

Sixty's Rectangles (6/12): (3 x 20) (5 x 12) (6 x 10) (10 x 6) (12 x 5) (20 x 3)

Sixty-Three's Rectangles (2/6): (7 x 9) (9 x 7)

Sixty-Four's Rectangles (3/7): (2 x 32) (4 x 16) (8 x 8)

Seventy's Rectangles (3/8): (5 x 14) (7 x 10) (10 x 7)

Seventy-Two's Rectangles (5/12): (3 x 24) (6 x 12) (8 x 9) (9 x 8) (12 x 6)

Eighty's Rectangles (4/10): (4 x 20) (5 x 16) (8 x 10) (10 x 8)

Ninety's Rectangles (3/12): (9 x 10) (10 x 9) (30 x 3)

One-Hundred's Rectangles (4/9): (1 x 100) (4 x 25) (5 x 20) (10 x 10)

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 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 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.

Twenty-Four with her badge.

The badge.

Limited Sequences

• Roaring Twenties

Founder: Twenty

The Roaring Twenties is for Numberblocks ranging from Twenty to Twenty-Nine.

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

Gallery

The badge

20 - 29 with the badge, along with other badges.

Member gallery

Twenty (19 < 20 < 30) Twenty-One(19 < 21 < 30) Twenty-Two (19 < 22 < 30) Twenty-Three (19 < 23 < 30) Twenty-Four (19 < 24 < 30) Twenty-Five (19 < 25 < 30) Twenty-Six (19 < 26 < 30) Twenty-Seven (19 < 27 < 30) Twenty-Eight (19 < 28 < 30) Twenty-Nine (19 < 29 < 30)

References

List of lists

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Alphablocks	Characters, Episodes, Objects, Character Relationships, Songs, Minor Characters, Words (Stealth, Nonsense) Digraphs and Trigraphs, Alphaland
Numberblocks	Characters, Episodes, Objects, Character Relationships, Songs, Compound Numberblocks, Clubs, Planets, Step Squad, Penny Coins, Numberland
Colourblocks	Characters, Episodes, Objects, Character Relationships, Songs, Mixes, Colourland
Wonderblocks	Characters, Episodes, Character Relationships, Songs, Do Block Chants, Codes
Multiple shows	Seasons, Locations, References, Animals, Fourth Wall Breaks, Episode errors
Other	Voice Actors, Episodes Airing on Special Days, Exclusive Commercials, DVD Releases, International Dubs, Animals, Levelling System (Episodes), Merchandise, Bootlegs, Deleted Scenes