12 Days of Christmas
43rd
99 Bottles of Beer
475th
21st
Abundant Numbers
51st
Arabic to Roman
34th
brainfuck
19th
Christmas Trees
69th
CSS Colors
35th
Cubes
29th
Diamonds
54th
Divisors
468th
71st
Emirp Numbers
85th
Evil Numbers
52nd
Fibonacci
62nd
Fizz Buzz
1,121st
77th
Happy Numbers
75th
Leap Years
21st
Leyland Numbers
39th
Lucky Tickets
Morse Decoder
23rd
Morse Encoder
26th
Niven Numbers
42nd
Odious Numbers
46th
Ordinal Numbers
1st
22nd
Pangram Grep
55th
Pascal’s Triangle
39th
Pernicious Numbers
52nd
Prime Numbers
62nd
Quine
99th
107th
Rock-paper-scissors-Spock-lizard
35th
Roman to Arabic
38th
Rule 110
28th
Seven Segment
21st
Sierpiński Triangle
24th
Spelling Numbers
15th
Sudoku
46th
15th
United States
35th
Vampire Numbers
26th
λ
22nd
π
39th
τ
36th30th
φ
38th
√2
32nd
𝑒
36th