12 Days of Christmas
Abundant Numbers
Arabic to Roman
brainfuck
Christmas Trees
Divisors
Emirp Numbers
Evil Numbers
Fibonacci
6,206th
Fizz Buzz
10,570th
Happy Numbers
Leap Years
Niven Numbers
Odious Numbers
Pangram Grep
Prime Numbers
Quine
241st2,293rd4,218th4,333rd2,679th3,719th3,007th1,313th1,221st3,725th2,973rd
π
√2