12 Days of Christmas
624
99 Bottles of Beer
799
558
Abundant Numbers
750
708
831
706
Abundant Numbers (Long)
791
812
887
741
Arabic to Roman
673
Arithmetic Numbers
830
856
725
Arrows
631
785
Catalan Numbers
893
Christmas Trees
705
Collatz
833
925
Day of Week
534
Fibonacci
892
938
899
Fizz Buzz
477
852
971
989