12 Days of Christmas
47th
99 Bottles of Beer
501st
29th
Abundant Numbers
55th
Arabic to Roman
39th
brainfuck
23rd
Christmas Trees
81st
CSS Colors
41st
Cubes
37th
Diamonds
69th
Divisors
490th
86th
Emirp Numbers
95th
Evil Numbers
58th
Fibonacci
68th
Fizz Buzz
1,170th
83rd
Happy Numbers
80th
Leap Years
21st
Leyland Numbers
47th
Lucky Tickets
Morse Decoder
31st
Morse Encoder
33rd
Niven Numbers
50th
Odious Numbers
52nd
Ordinal Numbers
1st
25th
Pangram Grep
61st
Pascal’s Triangle
44th
Pernicious Numbers
62nd
Prime Numbers
70th
Quine
108th
102nd
Rock-paper-scissors-Spock-lizard
41st
Roman to Arabic
43rd
Rule 110
35th
Seven Segment
26th
Sierpiński Triangle
28th
Spelling Numbers
18th
Sudoku
54th
19th
United States
39th
Vampire Numbers
31st
λ
30th
π
τ
37th
φ
√2
𝑒
42nd