12 Days of Christmas
178th
Abundant Numbers
56th
Arabic to Roman
107th
brainfuck
125th
Christmas Trees
211th
Divisors
323rd
Emirp Numbers
110th
Evil Numbers
169th
Fibonacci
67th
360th
Fizz Buzz
152nd
613th
221st
1st125th209th
1,478th
239th
Happy Numbers
115th
Leap Years
196th
Niven Numbers
234th
Odious Numbers
145th
Pangram Grep
140th
Prime Numbers
187th
Quine
1st25th205th98th32nd37th278th1st1st40th53rd
67th85th85th15th
π
84th
√2
433rd