12 Days of Christmas
425
99 Bottles of Beer
817
Collatz
886
Evil Numbers
630
Evil Numbers (Long)
643
Fibonacci
109
924
ISBN
658
Leap Years
933
Niven Numbers
704
Niven Numbers (Long)
825
Number Spiral
572
Odious Numbers
629
Odious Numbers (Long)
641
Ordinal Numbers
629
Rock-paper-scissors-Spock-lizard
459
Seven Segment
465
SierpiΕski Triangle
115
Tongue-twisters
448
π
21