12 Days of Christmas
868
Collatz
918
Divisors
841
Evil Numbers
536
Fibonacci
789
Fizz Buzz
989
Foo Fizz Buzz Bar
873
Happy Numbers
625
Happy Numbers (Long)
748
Kolakoski Sequence
535
Leap Years
933
Leyland Numbers
689
Look and Say
876
Niven Numbers
928
Pascal’s Triangle
734
Pernicious Numbers
438
Prime Numbers
896
Quine
866
Recamán
747
Tongue-twisters
510