12 Days of Christmas
858Collatz
948Divisors
860Evil Numbers
552Fibonacci
805Fizz Buzz
1,000Foo Fizz Buzz Bar
898Happy Numbers
785Happy Numbers (Long)
785Kolakoski Sequence
563Leap Years
953Leyland Numbers
732Look and Say
909Niven Numbers
955Pascal’s Triangle
765Pernicious Numbers
453Prime Numbers
923Quine
893Recamán
773Tongue-twisters
780