12 Days of Christmas
478
99 Bottles of Beer
598
Abundant Numbers
676
Arabic to Roman
505
Christmas Trees
533
CSS Colors
48
Cubes
568
Diamonds
628
Divisors
848
Emirp Numbers
313
Evil Numbers
565
Fibonacci
965
Fizz Buzz
861
Happy Numbers
439
Kolakoski Sequence
423
Leap Years
812
Look and Say
513
Niven Numbers
888
Odious Numbers
562
Ordinal Numbers
658
Pangram Grep
629
Pernicious Numbers
568
Prime Numbers
670
Quine
943
Recamán
612
Rule 110
474
Seven Segment
280
Spelling Numbers
544
Tongue-twisters
412
United States
135
Vampire Numbers
104
Van Eck Sequence
616
π
995725745638204
τ
9659
201
φ
88
169
√2
83
204
𝑒
87
161