12 Days of Christmas
2nd
8th
99 Bottles of Beer
2nd
8th
Abundant Numbers
1st
10th
Abundant Numbers (Long)
1st
7th
Arabic to Roman
15th
Arithmetic Numbers
4th
Ascending Primes
3rd
ASCII Table
1st
1st
Billiards
7th
Card Number Validation
4th
Catalan Numbers
1st
1st
Catalan’s Constant
1st
7th
Christmas Trees
1st
18th
Collatz
2nd
12th
Cubes
💎
18th
Diamonds
4th
1st
Divisors
1st
25th
Emirp Numbers
8th
7th
Emirp Numbers (Long)
9th
24th
Evil Numbers
7th
1st8th
Evil Numbers (Long)
1st
1st6th
Factorial Factorisation
2nd
10th
Farey Sequence
7th
Fibonacci
1st
1st
Fizz Buzz
1st309th
Foo Fizz Buzz Bar
1st
1st
Fractions
1st
1st
Game of Life
26th
Gijswijt’s Sequence
31st
Happy Numbers
1st
1st
Happy Numbers (Long)
1st
17th
Hexdump
32nd
Intersection
1st
12th
Inventory Sequence
2nd
11th
ISBN
10th
12th
Jacobi Symbol
4th
Kolakoski Constant
💎
9th
Kolakoski Sequence
1st
1st
Leap Years
1st
1st
Levenshtein Distance
3rd
Leyland Numbers
4th
12th
Look and Say
1st
6th
Lucky Numbers
8th
11th
Lucky Tickets
1st
1st
Niven Numbers
1st
1st
Niven Numbers (Long)
1st
Number Spiral
5th
9th
Odious Numbers
6th
1st1st
Odious Numbers (Long)
1st
1st
Ordinal Numbers
1st
3rd5th
PalindromemordnilaP
1st3rd23rd
Pangram Grep
1st
1st
Pascal’s Triangle
3rd
1st
Pernicious Numbers
5th
1st
Pernicious Numbers (Long)
1st
1st
Prime Numbers
1st
1st16th
Prime Numbers (Long)
1st
1st
Quine
1st
1st
Recamán
1st
11th
Repeating Decimals
1st
Reverse Polish Notation
1st
26th
Rijndael S-box
9th
Roman to Arabic
1st
28th
ROT13
1st
1st
Rule 110
3rd
15th
Seven Segment
25th
Sierpiński Triangle
2nd
10th
Smith Numbers
22nd
Spelling Numbers
6th
17th
Tic-tac-toe
1st
3rd
Tongue-twisters
18th
Tower of Hanoi
18th
Transpose Sentence
26th
United States
Vampire Numbers
4th
6th
Van Eck Sequence
5th
29th
Zeckendorf Representation
22nd
π
6th
1st
τ
4th
7th
φ
1st
1st
√2
1st
1st
𝑒
2nd
1st