12 Days of Christmas
257th
99 Bottles of Beer
235th
Abundant Numbers
62nd
Arrows
40th
brainfuck
161st
42nd
Divisors
67th
Emirp Numbers
55th
Evil Numbers
103rd
Forsyth–Edwards Notation
34th
Leap Years
83rd
Levenshtein Distance
1st
Morse Decoder
27th
Niven Numbers
69th
Pangram Grep
15th
Pernicious Numbers
52nd
Quine
1st81st31st1st97th
Rock-paper-scissors-Spock-lizard
39th
Star Wars GPT
21st
Van Eck Sequence
33rd
π
140th
φ