12 Days of Christmas
45th
99 Bottles of Beer
468th
30th
Abundant Numbers
49th
Arabic to Roman
38th
brainfuck
24th
Christmas Trees
70th
CSS Colors
33rd
Cubes
32nd
Diamonds
52nd
Divisors
464th
71st
Emirp Numbers
30th
Evil Numbers
51st
Fibonacci
59th
Fizz Buzz
1,112th
76th
Happy Numbers
47th
Leap Years
22nd
Leyland Numbers
39th
Lucky Tickets
Morse Decoder
20th
Morse Encoder
23rd
Niven Numbers
41st
Odious Numbers
45th
Ordinal Numbers
1st
23rd
Pangram Grep
54th
Pascal’s Triangle
37th
Pernicious Numbers
49th
Prime Numbers
59th
Quine
97th
99th
Rock-paper-scissors-Spock-lizard
31st
Roman to Arabic
40th
Rule 110
30th
Seven Segment
25th
Sierpiński Triangle
24th
Spelling Numbers
18th
Sudoku
48th
15th
United States
31st
Vampire Numbers
30th
λ
23rd
π
40th
τ
36th31st
φ
39th
√2
32nd
𝑒
36th