12 Days of Christmas
867
Collatz
917
Divisors
841
Evil Numbers
536
Fibonacci
789
Fizz Buzz
989
Foo Fizz Buzz Bar
872
Happy Numbers
625
Happy Numbers (Long)
747
Kolakoski Sequence
534
Leap Years
933
Leyland Numbers
689
Look and Say
875
Niven Numbers
928
Pascal’s Triangle
733
Pernicious Numbers
438
Prime Numbers
896
Quine
865
Recamán
747
Tongue-twisters
510