12 Days of Christmas
443
Abundant Numbers (Long)
845
Arithmetic Numbers
382
Arrows
472
Card Number Validation
774
CSS Colors
118
Divisors
773
Game of Life
459
Intersection
654
Inventory Sequence
850
Look and Say
877
Lucky Numbers
601
Odious Numbers
588
Smith Numbers
571
Sudoku
322
Tongue-twisters
340
Zodiac Signs
677
√2
844