12 Days of Christmas
14th
122nd
860th
24 Game
5th
99 Bottles of Beer
15th139th148th
992nd
Abundant Numbers
17th172nd81st
35th
Abundant Numbers (Long)
10th99th55th
47th
Alphabetic Numbers
2nd
Arabic to Roman
7th
Arithmetic Numbers
8th
Arrows
8th33rd49th
39th
Ascending Primes
4th
ASCII Table
10th113th63rd
344th
Calendar
💎14th16th
Card Number Validation
4th44th
229th
Catalan Numbers
9th
32nd
391st
Catalan’s Constant
4th
Christmas Trees
8th122nd
Collatz
11th192nd83rd
633rd
Continued Fractions
3rd16th11th
CSS Colors
10th
Cubes
7th
Day of Week
8th38th
Diamonds
7th
Divisors
12th230th72nd
Emirp Numbers
14th95th57th
756th
Emirp Numbers (Long)
9th
Emojify
5th
Evil Numbers
17th209th111th
713th
Evil Numbers (Long)
16th114th75th
Factorial Factorisation
6th34th16th
Farey Sequence
9th
130th
Fibonacci
26th321st106th
54th
78th197th
Fizz Buzz
10th299th159th
44th
Foo Fizz Buzz Bar
15th106th88th
Forsyth–Edwards Notation
6th25th
Fractions
9th
Gijswijt’s Sequence
6th
Gray Code Decoder
3rd21st
Gray Code Encoder
5th21st
Happy Numbers
12th102nd68th
Happy Numbers (Long)
12th
Hilbert Curve
3rd
Intersection
7th46th47th
19th
Inventory Sequence
12th45th
246th
ISBN
17th
Jacobi Symbol
5th28th
146th
Kaprekar Numbers
8th
Kolakoski Constant
6th
Kolakoski Sequence
9th
Leap Years
16th205th90th
15th
447th
Leyland Numbers
5th
41st
ln 2
3rd15th
17th
149th
Look and Say
8th
Lucky Numbers
8th30th
228th
Lucky Tickets
4th
Mandelbrot
5th
Medal Tally
3rd
24th
Morse Decoder
3rd
29th
Morse Encoder
5th
Multitap Input
3rd12th
94th
N Queens
5th28th24th
Niven Numbers
19th173rd115th
593rd
Niven Numbers (Long)
15th71st
87th
Number Spiral
12th
Odious Numbers
17th181st98th
819th
Odious Numbers (Long)
14th107th70th
Ordinal Numbers
9th
PalindromemordnilaP
4th16th
Pangram Grep
13th71st62nd
Partition Numbers
8th27th
Pascal’s Triangle
14th69th32nd
Pernicious Numbers
22nd129th79th
Pernicious Numbers (Long)
11th
Polyominoes
5th
Prime Numbers
14th181st52nd
39th
Prime Numbers (Long)
12th108th35th
Quine
23rd107th132nd
756th
Recamán
8th48th27th
Rijndael S-box
5th64th
118th
Rock-paper-scissors-Spock-lizard
3rd20th
Roman to Arabic
7th
ROT13
5th
Set
3rd7th20th
Seven Segment
10th
Sierpiński Triangle
10th79th42nd
Smith Numbers
8th34th30th
Sudoku
4th26th
Sudoku (Fill-in)
4th25th
8th
Taxicab Numbers
2nd
12th
78th
Tic-tac-toe
3rd25th20th
177th
Tongue-twisters
7th
Tower of Hanoi
10th
Transpose Sentence
4th
21st
Trinomial Triangle
7th14th
United States
4th
Vampire Numbers
6th
31st
Van Eck Sequence
10th
γ
2nd17th
λ
7th
25th
π
7th44th43rd
431st
τ
6th25th26th
φ
6th20th25th
271st
√2
5th18th30th
422nd
𝑒
7th40th30th
298th