12 Days of Christmas
815
99 Bottles of Beer
718
Abundant Numbers
784
Abundant Numbers (Long)
929
Arithmetic Numbers
863
Catalan Numbers
972
Christmas Trees
772
Collatz
704
582
964
803
Day of Week
894
Diamonds
625
Divisors
984
Emirp Numbers
611
Emirp Numbers (Long)
668
Evil Numbers
892
Evil Numbers (Long)
868
Fibonacci
722
960
693
Fizz Buzz
976
Foo Fizz Buzz Bar
986
Fractions
785
Gijswijt’s Sequence
512
Happy Numbers
809
Happy Numbers (Long)
767
Intersection
801
Inventory Sequence
866
ISBN
808
Kolakoski Sequence
835
Leap Years
901
691
Levenshtein Distance
501
Leyland Numbers
779
609
ln 2
777
Look and Say
517
Lucky Numbers
517
Lucky Tickets
600
Medal Tally
658
715
Niven Numbers
941
Niven Numbers (Long)
904
Number Spiral
411
Odious Numbers
833
Odious Numbers (Long)
829
Ordinal Numbers
866
Pangram Grep
909
Pascal’s Triangle
785
Pernicious Numbers
831
Pernicious Numbers (Long)
855
Prime Numbers
800
Prime Numbers (Long)
701
Recamán
839
Reverse Polish Notation
1,000
Seven Segment
413
Smith Numbers
621
Sudoku (Fill-in)
570
Tongue-twisters
643
United States
171
Van Eck Sequence
739
Zodiac Signs
532
𝑒
661