12 Days of Christmas
133rd
Abundant Numbers
50th
Arabic to Roman
83rd
brainfuck
88th
Christmas Trees
182nd
Divisors
289th
Emirp Numbers
95th
Evil Numbers
145th
Fibonacci
55th
314th
Fizz Buzz
126th
518th
194th
1st
115th
185th
1,214th
199th
Happy Numbers
93rd
Leap Years
167th
Niven Numbers
202nd
Odious Numbers
126th
Pangram Grep
115th
Prime Numbers
163rd
Quine
1st
23rd
163rd
27th
44th
247th
1st
80th
1st
33rd
45th
51st
78th
69th
1st
π
63rd
√2
343rd