12 Days of Christmas
868
Arrows
520
Christmas Trees
689
Collatz
831
Evil Numbers
817
Evil Numbers (Long)
798
Fibonacci
628
723
Fractions
482
Happy Numbers
711
Leap Years
813
Odious Numbers
548
849
Odious Numbers (Long)
827
Pangram Grep
677
Pernicious Numbers
763
Prime Numbers
407
Quine
848
945
Reverse Polish Notation
780
Roman to Arabic
467
716
Time Distance
863