12 Days of Christmas
837
Abundant Numbers (Long)
849
Arithmetic Numbers
382
Arrows
363
Card Number Validation
771
CSS Colors
250
Divisors
773
Game of Life
473
Intersection
702
Inventory Sequence
848
Look and Say
876
Lucky Numbers
601
Odious Numbers
588
Smith Numbers
570
Sudoku
502
Tongue-twisters
514
Zodiac Signs
744
√2
850