12 Days of Christmas
375
99 Bottles of Beer
411
Abundant Numbers
752
Abundant Numbers (Long)
824
Arithmetic Numbers
737
Catalan Numbers
972
Christmas Trees
672
Collatz
702
578809802
Day of Week
718
Diamonds
522
Divisors
933
Emirp Numbers
496
Emirp Numbers (Long)
556
Evil Numbers
892
Evil Numbers (Long)
868
Fibonacci
722
960
694
Fizz Buzz
891
Foo Fizz Buzz Bar
783
Fractions
668
Gijswijt’s Sequence
423
Happy Numbers
798
Happy Numbers (Long)
651
Intersection
588
Inventory Sequence
820
ISBN
632
Kolakoski Sequence
820
Leap Years
901
691
Levenshtein Distance
393
Leyland Numbers
663
611
ln 2
763
Look and Say
421
Lucky Numbers
490
Lucky Tickets
456
Medal Tally
680542
Niven Numbers
938
Niven Numbers (Long)
902
Number Spiral
336
Odious Numbers
833
Odious Numbers (Long)
830
Ordinal Numbers
706
Pangram Grep
771
Pascal’s Triangle
728
Pernicious Numbers
832
Pernicious Numbers (Long)
840
Prime Numbers
801
Prime Numbers (Long)
702
Recamán
757
Reverse Polish Notation
1,000
Seven Segment
302
Smith Numbers
458
Sudoku (Fill-in)
370
Tongue-twisters
362
United States
118
Van Eck Sequence
701
Zodiac Signs
402
𝑒
659