12 Days of Christmas
15th
99 Bottles of Beer
20th
Abundant Numbers
74th
Arabic to Roman
8th
brainfuck
8th
Christmas Trees
31st
Diamonds
16th
Divisors
88th
Emirp Numbers
33rd
Evil Numbers
30th
Fibonacci
69th
Fizz Buzz
86th330th
Happy Numbers
38th
Leap Years
91st
Niven Numbers
47th
Odious Numbers
29th
Ordinal Numbers
16th
Pangram Grep
34th
Pascal’s Triangle
45th
Pernicious Numbers
44th
Prime Numbers
77th
Quine
79th
Roman to Arabic
28th
Rule 110
23rd
Seven Segment
15th
Sierpiński Triangle
22nd
Spelling Numbers
8th
π
31st
𝑒
32nd