12 Days of Christmas
443
Abundant Numbers (Long)
843
Arithmetic Numbers
381
Arrows
465
Card Number Validation
767
CSS Colors
118
Divisors
773
Game of Life
458
Intersection
652
Inventory Sequence
847
Look and Say
875
Lucky Numbers
600
Odious Numbers
588
Smith Numbers
569
Sudoku
321
Tongue-twisters
340
Zodiac Signs
689
√2
843