12 Days of Christmas
45th
99 Bottles of Beer
471st
30th
Abundant Numbers
49th
Arabic to Roman
38th
brainfuck
24th
Christmas Trees
70th
CSS Colors
33rd
Cubes
32nd
Diamonds
54th
Divisors
466th
71st
Emirp Numbers
30th
Evil Numbers
52nd
Fibonacci
61st
Fizz Buzz
1,116th
77th
Happy Numbers
48th
Leap Years
22nd
Leyland Numbers
39th
Lucky Tickets
Morse Decoder
20th
Morse Encoder
23rd
Niven Numbers
41st
Odious Numbers
46th
Ordinal Numbers
1st
23rd
Pangram Grep
54th
Pascal’s Triangle
37th
Pernicious Numbers
50th
Prime Numbers
61st
Quine
99th
99th
Rock-paper-scissors-Spock-lizard
31st
Roman to Arabic
40th
Rule 110
30th
Seven Segment
25th
Sierpiński Triangle
24th
Spelling Numbers
18th
Sudoku
47th
15th
United States
33rd
Vampire Numbers
30th
λ
23rd
π
40th
τ
36th31st
φ
40th
√2
33rd
𝑒
36th