12 Days of Christmas
377
99 Bottles of Beer
414
Abundant Numbers
766
Abundant Numbers (Long)
846
Arithmetic Numbers
756
Catalan Numbers
1,000
Christmas Trees
684
Collatz
742
615
826
854
Day of Week
747
Diamonds
533
Divisors
947
Emirp Numbers
505
Emirp Numbers (Long)
573
Evil Numbers
909
Evil Numbers (Long)
891
Fibonacci
722
973
747
Fizz Buzz
898
Foo Fizz Buzz Bar
795
Fractions
689
Gijswijt’s Sequence
438
Happy Numbers
814
Happy Numbers (Long)
670
Intersection
608
Inventory Sequence
850
ISBN
651
Kolakoski Sequence
867
Leap Years
915
753
Levenshtein Distance
405
Leyland Numbers
681
677
ln 2
788
Look and Say
432
Lucky Numbers
515
Lucky Tickets
477
Medal Tally
754
559
Niven Numbers
957
Niven Numbers (Long)
926
Number Spiral
348
Odious Numbers
851
Odious Numbers (Long)
854
Ordinal Numbers
725
Pangram Grep
792
Pascal’s Triangle
746
Pernicious Numbers
851
Pernicious Numbers (Long)
864
Prime Numbers
816
Prime Numbers (Long)
721
Recamán
775
Reverse Polish Notation
1,000
Seven Segment
309
Smith Numbers
472
Sudoku (Fill-in)
385
Tongue-twisters
365
United States
125
Van Eck Sequence
726
Zodiac Signs
420
𝑒
676