12 Days of Christmas
375
99 Bottles of Beer
411
Abundant Numbers
752
Abundant Numbers (Long)
824
Arithmetic Numbers
736
Catalan Numbers
972
Christmas Trees
672
Collatz
702
578
808
800
Day of Week
717
Diamonds
522
Divisors
932
Emirp Numbers
495
Emirp Numbers (Long)
556
Evil Numbers
892
Evil Numbers (Long)
868
Fibonacci
722
960
693
Fizz Buzz
891
Foo Fizz Buzz Bar
783
Fractions
668
Gijswijt’s Sequence
423
Happy Numbers
798
Happy Numbers (Long)
650
Intersection
588
Inventory Sequence
819
ISBN
631
Kolakoski Sequence
835
Leap Years
901
689
Levenshtein Distance
392
Leyland Numbers
663
608
ln 2
763
Look and Say
421
Lucky Numbers
499
Lucky Tickets
455
Medal Tally
678
541
Niven Numbers
938
Niven Numbers (Long)
901
Number Spiral
336
Odious Numbers
833
Odious Numbers (Long)
829
Ordinal Numbers
706
Pangram Grep
771
Pascal’s Triangle
728
Pernicious Numbers
831
Pernicious Numbers (Long)
839
Prime Numbers
800
Prime Numbers (Long)
701
Recamán
757
Reverse Polish Notation
1,000
Seven Segment
302
Smith Numbers
457
Sudoku (Fill-in)
370
Tongue-twisters
362
United States
122
Van Eck Sequence
700
Zodiac Signs
401
𝑒
659