12 Days of Christmas
4th
144th
99 Bottles of Beer
2nd
117th
Abundant Numbers
1st
12th
Abundant Numbers (Long)
1st
67th
Arabic to Roman
68th
Arithmetic Numbers
4th
Ascending Primes
13th
ASCII Table
1st
50th
Billiards
21st
Card Number Validation
25th
Catalan Numbers
1st
1st
Catalan’s Constant
1st
23rd
Christmas Trees
1st
76th
Collatz
2nd
99th
Cubes
💎
67th
Diamonds
4th
20th
Divisors
1st
110th
Emirp Numbers
9th
12th
Emirp Numbers (Long)
8th
42nd
Evil Numbers
6th
1st8th
Evil Numbers (Long)
1st
1st4th
Factorial Factorisation
💎
28th
Farey Sequence
31st
Fibonacci
1st
1st
Fizz Buzz
189th290th
Foo Fizz Buzz Bar
1st
123rd
Fractions
1st
55th
Game of Life
41st
Gijswijt’s Sequence
32nd
Happy Numbers
11th
43rd
Happy Numbers (Long)
1st
60th
Hexdump
47th
Intersection
1st
86th
Inventory Sequence
2nd
22nd
ISBN
7th
70th
Jacobi Symbol
4th
Kolakoski Constant
💎
30th
Kolakoski Sequence
1st
3rd
Leap Years
1st
1st
Levenshtein Distance
3rd
Leyland Numbers
4th
83rd
Look and Say
1st
48th
Lucky Numbers
7th
28th
Lucky Tickets
1st
35th
Niven Numbers
1st
1st
Niven Numbers (Long)
1st
Number Spiral
5th
29th
Odious Numbers
6th
1st1st
Odious Numbers (Long)
1st
1st
Ordinal Numbers
1st
78th3rd
PalindromemordnilaP
1st3rd37th
Pangram Grep
1st
85th
Pascal’s Triangle
3rd
41st
Pernicious Numbers
5th
1st
Pernicious Numbers (Long)
1st
25th
Prime Numbers
1st
1st12th
Prime Numbers (Long)
1st
1st
Quine
1st
1st
Recamán
1st
51st
Repeating Decimals
20th
Reverse Polish Notation
1st
62nd
Rijndael S-box
25th
Roman to Arabic
1st
56th
ROT13
1st
47th
Rule 110
3rd
24th
Seven Segment
65th
Sierpiński Triangle
1st
17th
Smith Numbers
50th
Spelling Numbers
6th
47th
Tic-tac-toe
1st
23rd
Tongue-twisters
87th
Transpose Sentence
44th
United States
Vampire Numbers
3rd
51st
Van Eck Sequence
5th
37th
Zeckendorf Representation
38th
π
5th
47th
τ
4th
47th
φ
1st
31st
√2
1st
1st
𝑒
2nd
1st