12 Days of Christmas
133rd
100th
99 Bottles of Beer
64th
Arabic to Roman
60th
Christmas Trees
449th38th
Cubes
37th
Diamonds
59th
Divisors
504th80th
Emirp Numbers
476th84th
Evil Numbers
85th
Fibonacci
967th65th
Fizz Buzz
83rd
Happy Numbers
71st
Leap Years
99th
Morse Decoder
31st
Morse Encoder
32nd
Niven Numbers
85th
Odious Numbers
65th
Ordinal Numbers
90th49th
Pangram Grep
91st
Pascal’s Triangle
75th
Pernicious Numbers
70th
Prime Numbers
24th
Quine
100th
Rock-paper-scissors-Spock-lizard
259th35th
Roman to Arabic
55th
Rule 110
45th
Seven Segment
41st
Sierpiński Triangle
41st
λ
29th
π
118th184th51st
τ
39th
φ
49th
√2
47th
𝑒
66th