Clubs are groups of Numberblocks they join if they have a certain property (e.g., being a square number, a triangular number, a prime number, etc.). The first club ever started was Square Club, 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 Five would be related to Eighty-One in the Odd Blocks due to them both being odd numbers.
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, .
If you want to add your own fanmade clubs, add them here.
Pattern Clubs[]
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. 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 , and it is A000290 in the OEIS.
Cube Club is for cube numbers. Currently, its only members are One, Eight, Twenty-Seven, and Sixty-Four.
This club's formula is , and it is A000578 in the OEIS.
Step Squad Club is for Numberblocks that can make step shapes (also known as triangular numbers). 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 , , or , and it is A000217 in the OEIS.
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, Sixty, Sixty-Four, Eighty, and One Hundred.
This club's formula is or , and it is A192544 in the OEIS.
Array Clubs[]
Super Rectangle Club is for Numberblocks that can make six or more rectangle arrays. 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-Five, Fifty, Sixty, Sixty-Four, Seventy, Eighty, Ninety, and One Hundred, but were never seen with the club badge.
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, 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 and Ninety are in the club since they both 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.
Prime Club is for prime Numberblocks; ones that can only make prime positions 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 sequence is A000040 in the OEIS.
Multiples Clubs[]
The Family of Threes is for Numberblocks that are multiples of three. They organised a party in Too Many Threes.
This club's formula is , and it is A008585 in the OEIS.
The members are Three, Six, Nine, Twelve, Fifteen, Eighteen, Twenty-One, Twenty-Four, Twenty-Seven, Thirty, Thirty-Six, Forty-Two, Forty-Five, Sixty, Eighty-One, Ninety, Three Hundred, Nine Hundred, etc.
Rainbow Sevens Club is for Numberblocks that are multiples of seven.
This club's formula is , and it is A008589 in the OEIS.
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, and Seventy.
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 theme of the club.
This club's formula is , and it is A008593 in the OEIS.
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.[1]
This club's formula is , and it is A008595 in the OEIS.
Integer Clubs[]
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 Numberblocks in this club end in a one, three, five, seven, or nine.
This club's formula is or , and it is A005408 in the OEIS.
Even Tops Club is for even numbers, since when they stand two blocks wide, they have an even top. All Numberblocks in this club end in a zero, two, four, six, or eight.
This club's formula is , and it is A005843 in the OEIS.
Places Clubs[]
One-Enders Club is a club for Numberblocks that end in a one, like One, Eleven, Twenty-One, Thirty-One, and Eighty-One.
This club's formula is , and it is A017281 in the OEIS.
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.
Nine-Enders Club is for Numberblocks that end in a nine, like Nine, Nineteen, Twenty-Nine, and Forty-Nine.
This club's formula is , and it is A017377 in the OEIS.
The Roaring Twenties is for Numberblocks ranging from Twenty to Twenty-Nine.
This club's formula is , where and , and it is not in the OEIS as it is a limited sequence.
Other Clubs[]
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 Zero.
This club's formula is just , and it is A000027 in the OEIS.
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|---|---|
| Numberblocks | Episodes, Objects, Songs, Compound Numberblocks, Clubs, Planets |
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| Multiple shows | Seasons, Locations, References |
| Other | Voice Actors, Episodes Airing on Special Days, Exclusive Commercials, DVD Releases, International Dubs, Levelling System (Episodes), Merchandise, Bootlegs |