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
89th
Emirp Numbers
33rd
Evil Numbers
30th
Fibonacci
69th
Fizz Buzz
86th329th
Happy Numbers
38th
Leap Years
91st
Niven Numbers
47th
Odious Numbers
29th
Ordinal Numbers
17th
Pangram Grep
35th
Pascal’s Triangle
44th
Pernicious Numbers
43rd
Prime Numbers
76th
Quine
79th
Roman to Arabic
27th
Rule 110
23rd
Seven Segment
15th
Sierpiński Triangle
22nd
Spelling Numbers
8th
π
31st
𝑒
32nd