12 Days of Christmas
20th
99 Bottles of Beer
32nd
Abundant Numbers
9th
Arithmetic Numbers
346th
10th
ASCII Table
10th
Card Number Validation
7th
Christmas Trees
16th
Collatz
117th
570th63rd15th
Cubes
8th
Diamonds
17th
Divisors
6th
Evil Numbers
33rd
Factorial Factorisation
8th
Farey Sequence
12th
Fibonacci
1,011th
59th
Fizz Buzz
45th
51st
Foo Fizz Buzz Bar
731st47th9th
Fractions
13th
Gray Code Decoder
12th
7th
Gray Code Encoder
13th
Happy Numbers
32nd
Intersection
15th
Inventory Sequence
8th
ISBN
10th
Kaprekar Numbers
6th
Kolakoski Sequence
267th25th9th
Leap Years
32nd
Leyland Numbers
302nd
Look and Say
7th
Lucky Numbers
9th
Niven Numbers
40th
Odious Numbers
36th
Ordinal Numbers
17th
PalindromemordnilaP
8th
Pangram Grep
22nd
Pascal’s Triangle
15th
Pernicious Numbers
41st
Prime Numbers
10th
Recamán
244th
8th
Seven Segment
10th
Sierpiński Triangle
14th
Smith Numbers
9th
Transpose Sentence
7th
Trinomial Triangle
4th
Ulam Sequence
4th
United States
16th
Van Eck Sequence
8th