12 Days of Christmas
28th
99 Bottles of Beer
23rd
Abundant Numbers
9th
Abundant Numbers (Long)
1st
Arithmetic Numbers
1st
1st
Ascending Primes
4th
ASCII Table
11th
Card Number Validation
9th
Christmas Trees
4th
Collatz
9th
Cubes
11th
Day of Week
1st
Diamonds
9th
Divisors
1st
π
Emirp Numbers
13th
Emirp Numbers (Long)
9th
Evil Numbers
4th
Evil Numbers (Long)
1st
Factorial Factorisation
7th
Farey Sequence
25th
Fibonacci
2nd
Fizz Buzz
1st
Foo Fizz Buzz Bar
12th
Fractions
14th
Game of Life
24th
Gijswijtβs Sequence
10th
Happy Numbers
50th
Happy Numbers (Long)
7th
Intersection
2nd
2nd
Inventory Sequence
2nd
ISBN
5th
Jacobi Symbol
6th
Kolakoski Sequence
27th
Leap Years
5th
Levenshtein Distance
12th
Leyland Numbers
12th
Look and Say
6th
Lucky Numbers
11th
Lucky Tickets
7th
Mahjong
5th
Maze
7th
Medal Tally
π
N Queens
7th
Niven Numbers
1st
Niven Numbers (Long)
6th
Number Spiral
27th
Odious Numbers
14th
Odious Numbers (Long)
12th
Ordinal Numbers
10th
PalindromemordnilaP
8th
Pangram Grep
20th
Pascalβs Triangle
7th
Pernicious Numbers
1st
Pernicious Numbers (Long)
5th
Prime Numbers
7th
Prime Numbers (Long)
1st
12th
Proximity Grid
7th
Quine
26th
RecamΓ‘n
1st
Reversi
2nd
π
Rijndael S-box
13th
Rule 110
8th
Seven Segment
11th
SierpiΕski Triangle
21st
Smith Numbers
5th
Sudoku (Fill-in)
6th
Transpose Sentence
6th
United States
24th
Vampire Numbers
7th
Van Eck Sequence
1st
Zeckendorf Representation
11th
Ο
12th
β2
18th