aalec

12 Days of Christmas

99 Bottles of Beer

Abundant Numbers

Abundant Numbers (Long)

Arabic to Roman

Arithmetic Numbers

Arrows

ASCII Table

Catalan Numbers

Christmas Trees

Collatz

Cubes

Diamonds

Divisors

Emirp Numbers

Emojify

Evil Numbers

Evil Numbers (Long)

Factorial Factorisation

Fibonacci

Fizz Buzz

Foo Fizz Buzz Bar

Happy Numbers

Happy Numbers (Long)

ISBN

Leap Years

Leyland Numbers

Lucky Numbers

N Queens

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

Rijndael S-box

Rule 110

Seven Segment

Sierpiński Triangle

Sudoku

Time Distance

Tongue-twisters

United States