Abundant Numbers
785
Abundant Numbers (Long)
822
Christmas Trees
695
Collatz
853
Divisors
778
Emirp Numbers
527
Evil Numbers
703
Evil Numbers (Long)
701
Fibonacci
848
Fizz Buzz
767
Foo Fizz Buzz Bar
880
Fractions
689
Happy Numbers
583
Happy Numbers (Long)
688
Leap Years
867
Look and Say
854
Niven Numbers
941
Niven Numbers (Long)
860
Odious Numbers
585
Ordinal Numbers
804
Pascal’s Triangle
551
Prime Numbers
613
Recamán
616