12 Days of Christmas
121st
91st
99 Bottles of Beer
60th
Arabic to Roman
55th
Christmas Trees
403rd34th
Cubes
33rd
Diamonds
48th
Divisors
466th71st
Emirp Numbers
445th76th
Evil Numbers
75th
Fibonacci
891st59th
Fizz Buzz
76th
Happy Numbers
65th
Leap Years
87th
Morse Decoder
28th
Morse Encoder
28th
Niven Numbers
75th
Odious Numbers
58th
Ordinal Numbers
76th44th
Pangram Grep
81st
Pascal’s Triangle
68th
Pernicious Numbers
62nd
Prime Numbers
23rd
Quine
99th
Rock-paper-scissors-Spock-lizard
241st30th
Roman to Arabic
51st
Rule 110
40th
Seven Segment
38th
Sierpiński Triangle
36th
λ
26th
π
108th159th78th
τ
50th
φ
57th
√2
55th
𝑒
63rd