12 Days of Christmas
624
99 Bottles of Beer
799
558
Abundant Numbers
750
708
831
706
Abundant Numbers (Long)
790
812
887
741
Arabic to Roman
672
Arithmetic Numbers
829
856
725
Arrows
631
785
Catalan Numbers
893
Christmas Trees
704
Collatz
833
925
Day of Week
533
Fibonacci
879
937
899
Fizz Buzz
477
852
971
988