12 Days of Christmas
45th
99 Bottles of Beer
480th
25th
Abundant Numbers
53rd
Arabic to Roman
34th
brainfuck
20th
Christmas Trees
74th
CSS Colors
36th
Cubes
31st
Diamonds
59th
Divisors
475th
77th
Emirp Numbers
90th
Evil Numbers
55th
Fibonacci
63rd
Fizz Buzz
1,137th
80th
Happy Numbers
75th
Leap Years
21st
Leyland Numbers
42nd
Lucky Tickets
Morse Decoder
24th
Morse Encoder
27th
Niven Numbers
42nd
Odious Numbers
47th
Ordinal Numbers
1st
22nd
Pangram Grep
57th
Pascal’s Triangle
39th
Pernicious Numbers
55th
Prime Numbers
63rd
Quine
103rd
99th
Rock-paper-scissors-Spock-lizard
37th
Roman to Arabic
40th
Rule 110
30th
Seven Segment
21st
Sierpiński Triangle
25th
Spelling Numbers
15th
Sudoku
50th
15th
United States
35th
Vampire Numbers
28th
λ
24th
π
τ
36th
φ
√2
𝑒
37th