12 Days of Christmas
478
99 Bottles of Beer
597
Abundant Numbers
675
Arabic to Roman
503
Christmas Trees
533
CSS Colors
48
Cubes
567
Diamonds
627
Divisors
847
Emirp Numbers
312
Evil Numbers
564
Fibonacci
963
Fizz Buzz
861
Happy Numbers
439
Kolakoski Sequence
421
Leap Years
840
Look and Say
511
Niven Numbers
886
Odious Numbers
561
Ordinal Numbers
656
Pangram Grep
627
Pernicious Numbers
567
Prime Numbers
669
Quine
942
RecamΓ‘n
610
Rule 110
499
Seven Segment
279
Spelling Numbers
540
Tongue-twisters
412
United States
160
Vampire Numbers
104
Van Eck Sequence
613
Ο
995725745638204
Ο
9658
200
Ο
87
168
β2
83
204
π
87
161