12 Days of Christmas
376
99 Bottles of Beer
411
Abundant Numbers
753
Abundant Numbers (Long)
826
Arithmetic Numbers
739
Catalan Numbers
974
Christmas Trees
673
Collatz
706
580810805
Day of Week
720
Diamonds
523
Divisors
933
Emirp Numbers
496
Emirp Numbers (Long)
557
Evil Numbers
893
Evil Numbers (Long)
870
Fibonacci
722
960
700
Fizz Buzz
891
Foo Fizz Buzz Bar
784
Fractions
670
Gijswijt’s Sequence
425
Happy Numbers
799
Happy Numbers (Long)
652
Intersection
590
Inventory Sequence
822
ISBN
633
Kolakoski Sequence
821
Leap Years
901
676
Levenshtein Distance
394
Leyland Numbers
664
613
ln 2
766
Look and Say
422
Lucky Numbers
491
Lucky Tickets
458
Medal Tally
675540
Niven Numbers
939
Niven Numbers (Long)
904
Number Spiral
336
Odious Numbers
834
Odious Numbers (Long)
832
Ordinal Numbers
697
Pangram Grep
772
Pascal’s Triangle
729
Pernicious Numbers
833
Pernicious Numbers (Long)
842
Prime Numbers
801
Prime Numbers (Long)
703
Recamán
758
Reverse Polish Notation
1,000
Seven Segment
299
Smith Numbers
459
Sudoku (Fill-in)
371
Tongue-twisters
358
United States
115
Van Eck Sequence
702
Zodiac Signs
403
𝑒
660