12 Days of Christmas
122nd
91st
99 Bottles of Beer
60th
Arabic to Roman
57th
Christmas Trees
406th34th
Cubes
33rd
Diamonds
48th
Divisors
469th71st
Emirp Numbers
448th77th
Evil Numbers
76th
Fibonacci
904th59th
Fizz Buzz
76th
Happy Numbers
65th
Leap Years
87th
Morse Decoder
28th
Morse Encoder
28th
Niven Numbers
75th
Odious Numbers
59th
Ordinal Numbers
77th45th
Pangram Grep
81st
Pascal’s Triangle
68th
Pernicious Numbers
62nd
Prime Numbers
23rd
Quine
99th
Rock-paper-scissors-Spock-lizard
243rd31st
Roman to Arabic
52nd
Rule 110
41st
Seven Segment
39th
Sierpiński Triangle
37th
λ
26th
π
109th161st78th
τ
50th
φ
57th
√2
55th
𝑒
63rd