12 Days of Christmas
402
Abundant Numbers
778
Abundant Numbers (Long)
859
Catalan Numbers
957
Christmas Trees
643
Collatz
781
CSS Colors
509
Cubes
421
Divisors
947
Emirp Numbers
902
Emirp Numbers (Long)
663
Evil Numbers
1,000
Evil Numbers (Long)
976
Fibonacci
947
Fizz Buzz
898
Foo Fizz Buzz Bar
795
Fractions
674
Game of Life
475
Happy Numbers
578
Happy Numbers (Long)
726
Inventory Sequence
836
Kolakoski Sequence
895
Leap Years
860
Leyland Numbers
838
Look and Say
619
Lucky Numbers
743
Niven Numbers
957
Niven Numbers (Long)
926
Odious Numbers
1,000
Odious Numbers (Long)
1,000
Ordinal Numbers
660
Pangram Grep
847
Pascal’s Triangle
926
Pernicious Numbers
833
Pernicious Numbers (Long)
895
Prime Numbers
1,000
Prime Numbers (Long)
1,000
Quine
969
Recamán
786
Reverse Polish Notation
681
Smith Numbers
589
Tongue-twisters
367
United States
491
Vampire Numbers
655
Van Eck Sequence
855
π
420
τ
414
φ
743
√2
1,000
𝑒
1,00071