12 Days of Christmas
Abundant Numbers
Arabic to Roman
brainfuck
Christmas Trees
Divisors
Emirp Numbers
Evil Numbers
Fibonacci
6,129th
Fizz Buzz
10,636th
Happy Numbers
Leap Years
Niven Numbers
Odious Numbers
Pangram Grep
Prime Numbers
Quine
237th
2,252nd
4,075th
2,655th
3,668th
2,949th
1,291st
4,276th
1,200th
3,674th
2,918th
π
√2