12 Days of Christmas
4th
148th
99 Bottles of Beer
2nd
121st
Abundant Numbers
1st
12th
Abundant Numbers (Long)
1st
69th
Arabic to Roman
68th
Arithmetic Numbers
4th
Ascending Primes
16th
ASCII Table
1st
51st
Billiards
23rd
Card Number Validation
29th
Catalan Numbers
1st
1st
Catalan’s Constant
1st
24th
Christmas Trees
1st
78th
Collatz
2nd
105th
Cubes
💎
68th
Diamonds
4th
20th
Divisors
1st
115th
Emirp Numbers
9th
14th
Emirp Numbers (Long)
8th
42nd
Evil Numbers
6th
1st8th
Evil Numbers (Long)
1st
1st4th
Factorial Factorisation
💎
29th
Farey Sequence
34th
Fibonacci
1st
1st
Fizz Buzz
193rd292nd
Foo Fizz Buzz Bar
1st
128th
Fractions
1st
57th
Game of Life
44th
Gijswijt’s Sequence
34th
Happy Numbers
11th
47th
Happy Numbers (Long)
1st
61st
Hexdump
50th
Intersection
1st
90th
Inventory Sequence
2nd
23rd
ISBN
7th
74th
Jacobi Symbol
4th
Kolakoski Constant
💎
32nd
Kolakoski Sequence
1st
3rd
Leap Years
1st
1st
Levenshtein Distance
3rd
Leyland Numbers
4th
86th
Look and Say
1st
49th
Lucky Numbers
7th
28th
Lucky Tickets
1st
36th
Niven Numbers
1st
1st
Niven Numbers (Long)
1st
Number Spiral
5th
31st
Odious Numbers
6th
1st1st
Odious Numbers (Long)
1st
1st
Ordinal Numbers
1st
81st4th
PalindromemordnilaP
1st3rd40th
Pangram Grep
1st
88th
Pascal’s Triangle
3rd
43rd
Pernicious Numbers
5th
1st
Pernicious Numbers (Long)
1st
26th
Prime Numbers
1st
1st12th
Prime Numbers (Long)
1st
1st
Quine
1st
1st
Recamán
1st
55th
Repeating Decimals
20th
Reverse Polish Notation
1st
64th
Rijndael S-box
27th
Roman to Arabic
1st
61st
ROT13
1st
51st
Rule 110
3rd
26th
Seven Segment
67th
Sierpiński Triangle
1st
17th
Smith Numbers
54th
Spelling Numbers
6th
47th
Tic-tac-toe
1st
25th
Tongue-twisters
92nd
Transpose Sentence
47th
United States
Vampire Numbers
3rd
56th
Van Eck Sequence
5th
43rd
Zeckendorf Representation
43rd
π
5th
48th
τ
4th
47th
φ
1st
33rd
√2
1st
1st
𝑒
2nd
1st