12 Days of Christmas
402
Arrows
397
Christmas Trees
601
Collatz
753
Evil Numbers
817
Evil Numbers (Long)
798
Fibonacci
628
723
Fractions
410
Happy Numbers
551
Leap Years
812
Odious Numbers
528
849
Odious Numbers (Long)
827
Pangram Grep
574
Pernicious Numbers
763
Prime Numbers
407
Quine
848
945
Reverse Polish Notation
566
Roman to Arabic
454
541
Time Distance
482