12 Days of Christmas
3rd
127th
99 Bottles of Beer
2nd
108th
Abundant Numbers
1st
11th
Abundant Numbers (Long)
1st
60th
Arabic to Roman
63rd
Arithmetic Numbers
4th
Ascending Primes
11th
ASCII Table
1st
43rd
Billiards
10th
Card Number Validation
22nd
Catalan Numbers
1st
1st
Catalan’s Constant
1st
21st
Christmas Trees
1st
71st
Collatz
2nd
Cubes
💎
61st
Diamonds
4th
19th
Divisors
1st
100th
Emirp Numbers
9th
10th
Emirp Numbers (Long)
7th
34th
Evil Numbers
6th
1st6th
Evil Numbers (Long)
1st
1st3rd
Factorial Factorisation
💎
21st
Farey Sequence
26th
Fibonacci
1st
1st
Fizz Buzz
168th280th
Foo Fizz Buzz Bar
1st
110th
Fractions
1st
50th
Game of Life
37th
Gijswijt’s Sequence
30th
Happy Numbers
11th
37th
Happy Numbers (Long)
1st
53rd
Hexdump
40th
Intersection
1st
81st
Inventory Sequence
2nd
19th
ISBN
7th
65th
Jacobi Symbol
4th
Kolakoski Constant
💎
28th
Kolakoski Sequence
1st
1st
Leap Years
1st
1st
Levenshtein Distance
3rd
Leyland Numbers
4th
73rd
Look and Say
1st
44th
Lucky Numbers
4th
26th
Lucky Tickets
1st
32nd
Niven Numbers
1st
1st
Niven Numbers (Long)
1st
Number Spiral
5th
27th
Odious Numbers
6th
1st1st
Odious Numbers (Long)
1st
1st
Ordinal Numbers
1st
71st2nd
PalindromemordnilaP
1st3rd32nd
Pangram Grep
1st
78th
Pascal’s Triangle
3rd
35th
Pernicious Numbers
5th
1st
Pernicious Numbers (Long)
1st
22nd
Prime Numbers
1st
1st10th
Prime Numbers (Long)
1st
1st
Quine
1st
1st
Recamán
1st
47th
Repeating Decimals
20th
Reverse Polish Notation
1st
57th
Rijndael S-box
23rd
Roman to Arabic
1st
51st
ROT13
1st
29th
Rule 110
3rd
21st
Seven Segment
60th
Sierpiński Triangle
1st
14th
Smith Numbers
50th
Spelling Numbers
5th
44th
Tic-tac-toe
1st
17th
Tongue-twisters
79th
Transpose Sentence
38th
United States
Vampire Numbers
3rd
48th
Van Eck Sequence
5th
35th
Zeckendorf Representation
34th
π
5th
42nd
τ
4th
40th
φ
1st
25th
√2
1st
1st
𝑒
2nd
1st