12 Days of Christmas
375
99 Bottles of Beer
411
Abundant Numbers
753
Abundant Numbers (Long)
825
Arithmetic Numbers
749
Catalan Numbers
973
Christmas Trees
672
Collatz
703
578809803
Day of Week
719
Diamonds
523
Divisors
933
Emirp Numbers
496
Emirp Numbers (Long)
557
Evil Numbers
892
Evil Numbers (Long)
869
Fibonacci
722
960
694
Fizz Buzz
891
Foo Fizz Buzz Bar
783
Fractions
669
Gijswijt’s Sequence
424
Happy Numbers
798
Happy Numbers (Long)
651
Intersection
589
Inventory Sequence
821
ISBN
632
Kolakoski Sequence
821
Leap Years
901
672
Levenshtein Distance
393
Leyland Numbers
664
611
ln 2
764
Look and Say
421
Lucky Numbers
490
Lucky Tickets
457
Medal Tally
675539
Niven Numbers
938
Niven Numbers (Long)
903
Number Spiral
336
Odious Numbers
834
Odious Numbers (Long)
830
Ordinal Numbers
707
Pangram Grep
772
Pascal’s Triangle
728
Pernicious Numbers
832
Pernicious Numbers (Long)
841
Prime Numbers
801
Prime Numbers (Long)
702
Recamán
758
Reverse Polish Notation
1,000
Seven Segment
302
Smith Numbers
458
Sudoku (Fill-in)
371
Tongue-twisters
358
United States
118
Van Eck Sequence
701
Zodiac Signs
402
𝑒
660