randolchance

Abundant Numbers

Abundant Numbers (Long)

Catalan Numbers

Christmas Trees

Collatz

Diamonds

Divisors

Emirp Numbers

Emirp Numbers (Long)

Evil Numbers

Evil Numbers (Long)

Fibonacci

Fizz Buzz

Foo Fizz Buzz Bar

Fractions

Happy Numbers

Happy Numbers (Long)

Intersection

ISBN

Kolakoski Sequence

Leap Years

Leyland Numbers

Look and Say

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

Time Distance

Van Eck Sequence

√2