12 Days of Christmas
3rd
128th
99 Bottles of Beer
2nd
109th
Abundant Numbers
1st
12th
Abundant Numbers (Long)
1st
60th
Arabic to Roman
63rd
Arithmetic Numbers
4th
Ascending Primes
12th
ASCII Table
1st
45th
Billiards
11th
Card Number Validation
22nd
Catalan Numbers
1st
1st
Catalan’s Constant
1st
22nd
Christmas Trees
1st
71st
Collatz
2nd
Cubes
💎
62nd
Diamonds
4th
19th
Divisors
1st
100th
Emirp Numbers
9th
10th
Emirp Numbers (Long)
7th
36th
Evil Numbers
6th
1st6th
Evil Numbers (Long)
1st
1st3rd
Factorial Factorisation
💎
23rd
Farey Sequence
28th
Fibonacci
1st
1st
Fizz Buzz
171st282nd
Foo Fizz Buzz Bar
1st
110th
Fractions
1st
51st
Game of Life
38th
Gijswijt’s Sequence
31st
Happy Numbers
11th
37th
Happy Numbers (Long)
1st
55th
Hexdump
41st
Intersection
1st
82nd
Inventory Sequence
2nd
20th
ISBN
7th
65th
Jacobi Symbol
4th
Kolakoski Constant
💎
28th
Kolakoski Sequence
1st
2nd
Leap Years
1st
1st
Levenshtein Distance
3rd
Leyland Numbers
4th
75th
Look and Say
1st
44th
Lucky Numbers
4th
26th
Lucky Tickets
1st
32nd
Niven Numbers
1st
1st
Niven Numbers (Long)
1st
Number Spiral
5th
28th
Odious Numbers
6th
1st1st
Odious Numbers (Long)
1st
1st
Ordinal Numbers
1st
72nd2nd
PalindromemordnilaP
1st3rd32nd
Pangram Grep
1st
79th
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
48th
Repeating Decimals
20th
Reverse Polish Notation
1st
58th
Rijndael S-box
23rd
Roman to Arabic
1st
53rd
ROT13
1st
31st
Rule 110
3rd
22nd
Seven Segment
61st
Sierpiński Triangle
1st
15th
Smith Numbers
50th
Spelling Numbers
5th
45th
Tic-tac-toe
1st
17th
Tongue-twisters
80th
Transpose Sentence
40th
United States
Vampire Numbers
3rd
49th
Van Eck Sequence
5th
35th
Zeckendorf Representation
35th
π
5th
42nd
τ
4th
40th
φ
1st
26th
√2
1st
1st
𝑒
2nd
1st