2011-Chan-Ethan

12 Days of Christmas

99 Bottles of Beer

Abundant Numbers

Abundant Numbers (Long)

Arabic to Roman

brainfuck

Catalan Numbers

Christmas Trees

Collatz

Diamonds

Divisors

Emirp Numbers

Emirp Numbers (Long)

Evil Numbers

Evil Numbers (Long)

Fibonacci

Fizz Buzz

Foo Fizz Buzz Bar

Gijswijt’s Sequence

Happy Numbers

Happy Numbers (Long)

Inventory Sequence

ISBN

Kolakoski Sequence

Leap Years

Leyland Numbers

Look and Say

Lucky Numbers

Niven Numbers

Niven Numbers (Long)

Odious Numbers

Odious Numbers (Long)

Ordinal Numbers

Pangram Grep

Pascal’s Triangle

Pernicious Numbers

Pernicious Numbers (Long)

Prime Numbers

Prime Numbers (Long)

Quine

Recamán

Reverse Polish Notation

Sierpiński Triangle

Smith Numbers

Tongue-twisters

Vampire Numbers

Van Eck Sequence