12 Days of Christmas
45th
99 Bottles of Beer
481st
25th
Abundant Numbers
53rd
Arabic to Roman
34th
brainfuck
20th
Christmas Trees
76th
CSS Colors
37th
Cubes
31st
Diamonds
59th
Divisors
476th
78th
Emirp Numbers
90th
Evil Numbers
56th
Fibonacci
63rd
Fizz Buzz
1,137th
81st
Happy Numbers
76th
Leap Years
21st
Leyland Numbers
43rd
Lucky Tickets
Morse Decoder
24th
Morse Encoder
27th
Niven Numbers
43rd
Odious Numbers
49th
Ordinal Numbers
1st
23rd
Pangram Grep
59th
Pascal’s Triangle
40th
Pernicious Numbers
55th
Prime Numbers
64th
Quine
104th
99th
Rock-paper-scissors-Spock-lizard
38th
Roman to Arabic
40th
Rule 110
30th
Seven Segment
21st
Sierpiński Triangle
25th
Spelling Numbers
15th
Sudoku
50th
16th
United States
35th
Vampire Numbers
28th
λ
24th
π
τ
36th
φ
√2
𝑒
37th