Abundant Numbers
806
Collatz
859
831
Divisors
725
Evil Numbers
729
Fibonacci
813
Fizz Buzz
786
Foo Fizz Buzz Bar
778
Fractions
608
Happy Numbers
712
Happy Numbers (Long)
664
Intersection
674
Leap Years
886
Niven Numbers
647
Odious Numbers
657
Pernicious Numbers
600
Prime Numbers
817
Quine
504
RecamΓ‘n
882
Vampire Numbers
105
Van Eck Sequence
836
Ο
100
β2
101
π
81