Abundant Numbers
857
Arithmetic Numbers
705
Catalan Numbers
672
Collatz
947306780
Divisors
731
Evil Numbers
627
Fibonacci
589
Fizz Buzz
644
Foo Fizz Buzz Bar
675
Happy Numbers
504
Intersection
698
Kaprekar Numbers
711
Leap Years
870
Niven Numbers
667
Niven Numbers (Long)
279
Odious Numbers
649
Recamán
472