12 Days of Christmas
149th
Abundant Numbers
53rd
Arabic to Roman
97th
brainfuck
107th
Christmas Trees
196th
Divisors
308th
Emirp Numbers
99th
Evil Numbers
157th
Fibonacci
64th
340th
Fizz Buzz
141st
579th
212th
1st123rd202nd
1,383rd
230th
Happy Numbers
102nd
Leap Years
187th
Niven Numbers
216th
Odious Numbers
136th
Pangram Grep
127th
Prime Numbers
176th
Quine
1st25th192nd93rd30th52nd269th1st1st38th50th
56th83rd82nd7th
π
72nd
√2
396th