12 Days of Christmas
4th
158th
99 Bottles of Beer
2nd
125th
Abundant Numbers
1st
13th
Abundant Numbers (Long)
1st
76th
Arabic to Roman
69th
Arithmetic Numbers
4th
Ascending Primes
19th
ASCII Table
1st
52nd
Billiards
24th
Card Number Validation
34th
Catalan Numbers
1st
1st
Catalan’s Constant
1st
24th
Christmas Trees
1st
82nd
Collatz
2nd
107th
Cubes
💎
68th
Diamonds
4th
20th
Divisors
1st
119th
Emirp Numbers
9th
15th
Emirp Numbers (Long)
8th
46th
Evil Numbers
6th
1st8th
Evil Numbers (Long)
1st
1st4th
Factorial Factorisation
2nd
32nd
Farey Sequence
39th
Fibonacci
1st
1st
Fizz Buzz
199th297th
Foo Fizz Buzz Bar
1st
133rd
Fractions
1st
60th
Game of Life
45th
Gijswijt’s Sequence
38th
Happy Numbers
12th
53rd
Happy Numbers (Long)
1st
68th
Hexdump
52nd
Intersection
1st
93rd
Inventory Sequence
2nd
24th
ISBN
8th
76th
Jacobi Symbol
4th
Kolakoski Constant
💎
35th
Kolakoski Sequence
1st
3rd
Leap Years
1st
1st
Levenshtein Distance
3rd
Leyland Numbers
4th
87th
Look and Say
1st
54th
Lucky Numbers
7th
32nd
Lucky Tickets
1st
42nd
Niven Numbers
1st
1st
Niven Numbers (Long)
1st
Number Spiral
5th
33rd
Odious Numbers
6th
1st1st
Odious Numbers (Long)
1st
1st
Ordinal Numbers
1st
82nd4th
PalindromemordnilaP
1st3rd48th
Pangram Grep
1st
93rd
Pascal’s Triangle
3rd
46th
Pernicious Numbers
5th
1st
Pernicious Numbers (Long)
1st
30th
Prime Numbers
1st
1st13th
Prime Numbers (Long)
1st
1st
Quine
1st
1st
Recamán
1st
61st
Repeating Decimals
23rd
Reverse Polish Notation
1st
64th
Rijndael S-box
29th
Roman to Arabic
1st
63rd
ROT13
1st
56th
Rule 110
3rd
27th
Seven Segment
70th
Sierpiński Triangle
1st
17th
Smith Numbers
59th
Spelling Numbers
6th
48th
Tic-tac-toe
1st
29th
Tongue-twisters
94th
Tower of Hanoi
14th
Transpose Sentence
49th
United States
Vampire Numbers
3rd
58th
Van Eck Sequence
5th
47th
Zeckendorf Representation
43rd
π
5th
51st
τ
4th
50th
φ
1st
34th
√2
1st
1st
𝑒
2nd
1st