12 Days of Christmas
827
99 Bottles of Beer
711
Abundant Numbers
Arabic to Roman
502
Christmas Trees
534
CSS Colors
48
Cubes
Diamonds
628
Divisors
846
Emirp Numbers
Evil Numbers
574
Fibonacci
963
Fizz Buzz
864
Happy Numbers
Kolakoski Sequence
433
Leap Years
870
Look and Say
508
Niven Numbers
920
Odious Numbers
581
Ordinal Numbers
660
Pangram Grep
628
Pernicious Numbers
566
Prime Numbers
780
Quine
941
RecamΓ‘n
611
Rule 110
476
Seven Segment
298
Spelling Numbers
602
Tongue-twisters
681
United States
181
Vampire Numbers
107
Van Eck Sequence
611
Ο
1005725896345204
Ο
9759
200
Ο
88
168
β2
83
204
π
88
161