12 Days of Christmas
3rd
140th
99 Bottles of Beer
2nd
115th
Abundant Numbers
1st
12th
Abundant Numbers (Long)
1st
64th
Arabic to Roman
66th
Arithmetic Numbers
4th
Ascending Primes
13th
ASCII Table
1st
50th
Billiards
17th
Card Number Validation
24th
Catalan Numbers
1st
1st
Catalan’s Constant
1st
23rd
Christmas Trees
1st
75th
Collatz
2nd
Cubes
💎
65th
Diamonds
4th
20th
Divisors
1st
106th
Emirp Numbers
9th
12th
Emirp Numbers (Long)
7th
39th
Evil Numbers
6th
1st7th
Evil Numbers (Long)
1st
1st3rd
Factorial Factorisation
💎
28th
Farey Sequence
30th
Fibonacci
1st
1st
Fizz Buzz
181st288th
Foo Fizz Buzz Bar
1st
119th
Fractions
1st
54th
Game of Life
38th
Gijswijt’s Sequence
32nd
Happy Numbers
11th
41st
Happy Numbers (Long)
1st
58th
Hexdump
45th
Intersection
1st
85th
Inventory Sequence
2nd
22nd
ISBN
7th
68th
Jacobi Symbol
4th
Kolakoski Constant
💎
29th
Kolakoski Sequence
1st
3rd
Leap Years
1st
1st
Levenshtein Distance
3rd
Leyland Numbers
4th
80th
Look and Say
1st
47th
Lucky Numbers
7th
28th
Lucky Tickets
1st
35th
Niven Numbers
1st
1st
Niven Numbers (Long)
1st
Number Spiral
5th
28th
Odious Numbers
6th
1st1st
Odious Numbers (Long)
1st
1st
Ordinal Numbers
1st
76th3rd
PalindromemordnilaP
1st3rd36th
Pangram Grep
1st
82nd
Pascal’s Triangle
3rd
40th
Pernicious Numbers
5th
1st
Pernicious Numbers (Long)
1st
24th
Prime Numbers
1st
1st11th
Prime Numbers (Long)
1st
1st
Quine
1st
1st
Recamán
1st
51st
Repeating Decimals
20th
Reverse Polish Notation
1st
59th
Rijndael S-box
24th
Roman to Arabic
1st
55th
ROT13
1st
44th
Rule 110
3rd
23rd
Seven Segment
64th
Sierpiński Triangle
1st
16th
Smith Numbers
50th
Spelling Numbers
6th
47th
Tic-tac-toe
1st
22nd
Tongue-twisters
85th
Transpose Sentence
42nd
United States
Vampire Numbers
3rd
51st
Van Eck Sequence
5th
37th
Zeckendorf Representation
38th
π
5th
44th
τ
4th
44th
φ
1st
29th
√2
1st
1st
𝑒
2nd
1st