12 Days of Christmas
165th
Abundant Numbers
52nd
Arabic to Roman
100th
brainfuck
115th
Christmas Trees
197th
Divisors
306th
Emirp Numbers
105th
Evil Numbers
156th
Fibonacci
64th
336th
Fizz Buzz
140th
576th
211th
1st122nd202nd
1,398th
228th
Happy Numbers
106th
Leap Years
183rd
Niven Numbers
214th
Odious Numbers
134th
Pangram Grep
130th
Prime Numbers
175th
Quine
1st25th189th92nd29th51st264th1st1st38th50th
56th82nd81st1st
π
70th
√2
393rd