12 Days of Christmas
838
Abundant Numbers (Long)
849
Arithmetic Numbers
382
Arrows
364
Card Number Validation
774
CSS Colors
251
Divisors
773
Game of Life
474
Intersection
703
Inventory Sequence
850
Look and Say
877
Lucky Numbers
601
Odious Numbers
588
Smith Numbers
571
Sudoku
502
Tongue-twisters
514
Zodiac Signs
744
√2
850