12 Days of Christmas
121st
91st
99 Bottles of Beer
60th
Arabic to Roman
55th
Christmas Trees
399th33rd
Cubes
32nd
Diamonds
47th
Divisors
464th70th
Emirp Numbers
440th76th
Evil Numbers
75th
Fibonacci
886th59th
Fizz Buzz
76th
Happy Numbers
65th
Leap Years
86th
Morse Decoder
27th
Morse Encoder
27th
Niven Numbers
74th
Odious Numbers
58th
Ordinal Numbers
75th43rd
Pangram Grep
81st
Pascal’s Triangle
67th
Pernicious Numbers
61st
Prime Numbers
23rd
Quine
99th
Rock-paper-scissors-Spock-lizard
240th30th
Roman to Arabic
50th
Rule 110
40th
Seven Segment
38th
Sierpiński Triangle
36th
λ
26th
π
108th155th77th
τ
50th
φ
57th
√2
54th
𝑒
63rd