12 Days of Christmas
443
Abundant Numbers (Long)
844
Arithmetic Numbers
381
Arrows
471
Card Number Validation
770
CSS Colors
118
Divisors
773
Game of Life
458
Intersection
652
Inventory Sequence
848
Look and Say
876
Lucky Numbers
600
Odious Numbers
588
Smith Numbers
570
Sudoku
321
Tongue-twisters
340
Zodiac Signs
677
√2
843