12 Days of Christmas
16th
Abundant Numbers
6th
Abundant Numbers (Long)
5th
Arithmetic Numbers
10th
Ascending Primes
13th
ASCII Table
8th
brainfuck
4th
Card Number Validation
7th
Catalan Numbers
11th
Christmas Trees
33rd
Collatz
21st1st
Day of Week
12th
Divisors
23rd10th89th803rd
Emirp Numbers
15th
Emirp Numbers (Long)
5th
Evil Numbers
31st
Evil Numbers (Long)
30th
Factorial Factorisation
7th
Farey Sequence
20th
Fibonacci
213th1st1st
Fizz Buzz
154th47th
Foo Fizz Buzz Bar
4th
Fractions
8th
Game of Life
15th
Gijswijt’s Sequence
4th
Happy Numbers
25th
Happy Numbers (Long)
10th
Inventory Sequence
💎8th
ISBN
3rd
Kaprekar Numbers
7th
Kolakoski Sequence
15th
Leap Years
3rd
Levenshtein Distance
6th
Leyland Numbers
11th
ln 2
19th
Look and Say
4th
Lucky Numbers
14th
Lucky Tickets
5th
N Queens
💎
Niven Numbers
14th
Niven Numbers (Long)
7th
Number Spiral
3rd
Odious Numbers
38th27th
Odious Numbers (Long)
24th17th
Ordinal Numbers
5th
PalindromemordnilaP
5th
Pangram Grep
4th
Partition Numbers
4th
Pascal’s Triangle
7th
Pernicious Numbers
30th
Pernicious Numbers (Long)
7th
Polyominoes
2nd
Prime Numbers
9th
Prime Numbers (Long)
3rd
Proximity Grid
2nd
Quine
93rd24th94th681st
Recamán
11th
Repeating Decimals
7th3rd
Reverse Polish Notation
5th
Rijndael S-box
9th
Roman to Arabic
12th
ROT13
4th
Set
3rd
Seven Segment
14th
Sierpiński Triangle
10th
Smith Numbers
5th
Spelling Numbers
8th
Tic-tac-toe
2nd
Transpose Sentence
5th
United States
17th
Vampire Numbers
7th
Van Eck Sequence
5th
Zeckendorf Representation
2nd
π
24th