Abundant Numbers
645
Christmas Trees
505
Collatz
750
Divisors
823
Emirp Numbers
379
Evil Numbers
517
678
Fibonacci
556
474504
Fizz Buzz
624809609726
Foo Fizz Buzz Bar
742
Fractions
688
Leap Years
590
443
Niven Numbers
688
Number Spiral
208
Odious Numbers
530
588
Pernicious Numbers
506
Prime Numbers
533
Prime Numbers (Long)
571
Quine
969
SierpiΕski Triangle
134
Tongue-twisters
282
β2
710