12 Days of Christmas
478
99 Bottles of Beer
597
Abundant Numbers
Arabic to Roman
502
Christmas Trees
532
CSS Colors
48
Cubes
Diamonds
622
Divisors
846
Emirp Numbers
Evil Numbers
564
Fibonacci
963
Fizz Buzz
929
Happy Numbers
Kolakoski Sequence
420
Leap Years
840
Look and Say
508
Niven Numbers
885
Odious Numbers
560
Ordinal Numbers
655
Pangram Grep
626
Pernicious Numbers
565
Prime Numbers
668
Quine
941
RecamΓ‘n
609
Rule 110
498
Seven Segment
278
Spelling Numbers
539
Tongue-twisters
411
United States
160
Vampire Numbers
106
Van Eck Sequence
611
Ο
995725745637204
Ο
9658
200
Ο
87
168
β2
82
203
π
86
160