12 Days of Christmas
168th
Abundant Numbers
59th
Arabic to Roman
107th
brainfuck
118th
Christmas Trees
213th
Divisors
330th
Emirp Numbers
106th
Evil Numbers
174th
Fibonacci
72nd
377th
Fizz Buzz
154th
644th
225th
1st129th212th
1,481st
245th
Happy Numbers
111th
Leap Years
207th
Niven Numbers
241st
Odious Numbers
151st
Pangram Grep
146th
Prime Numbers
194th
Quine
1st24th206th102nd33rd40th288th1st1st42nd57th
72nd87th85th19th
π
88th
√2
455th