derekthatcher

12 Days of Christmas

99 Bottles of Beer

Abundant Numbers

Christmas Trees

Cubes

Diamonds

Divisors

Emirp Numbers

Evil Numbers

Fibonacci

Fizz Buzz

Foo Fizz Buzz Bar

Happy Numbers

Leap Years

Niven Numbers

Number Spiral

Odious Numbers

Ordinal Numbers

Pascal’s Triangle

Pernicious Numbers

Prime Numbers

Quine

Rock-paper-scissors-Spock-lizard