12 Days of Christmas
838
Abundant Numbers (Long)
849
Arithmetic Numbers
382
Arrows
364
Card Number Validation
773
CSS Colors
251
Divisors
773
Game of Life
474
Intersection
702
Inventory Sequence
849
Look and Say
877
Lucky Numbers
601
Odious Numbers
588
Smith Numbers
571
Sudoku
502
Tongue-twisters
514
Zodiac Signs
744
√2
850