12 Days of Christmas
804
99 Bottles of Beer
828
Collatz
891
Evil Numbers
631
Evil Numbers (Long)
645
Fibonacci
130925
ISBN
663
Leap Years
935
Niven Numbers
707
Niven Numbers (Long)
831
Number Spiral
574
Odious Numbers
629
Odious Numbers (Long)
642
Ordinal Numbers
633
Rock-paper-scissors-Spock-lizard
601
Seven Segment
516
Sierpiński Triangle
85
Tongue-twisters
677
𝑒
23