12 Days of Christmas
1,000th
99 Bottles of Beer
116th
Abundant Numbers
86th
Christmas Trees
21st444th
Divisors
11th118th
Emirp Numbers
15th
Evil Numbers
743rd
Fibonacci
1,125th
Fizz Buzz
141st1,576th
Fractions
463rd
Happy Numbers
100th
Leap Years
472nd
Morse Decoder
104th
Morse Encoder
64th
Niven Numbers
40th255th
Pangram Grep
331st
Pascal’s Triangle
626th
Pernicious Numbers
369th
Prime Numbers
379th
Quine
97th72nd
Rule 110
152nd
Seven Segment
149th
Tongue-twisters
47th
λ
71st