12 Days of Christmas
478
99 Bottles of Beer
598
Abundant Numbers
670
Arabic to Roman
503
Christmas Trees
530
CSS Colors
48
Cubes
568
Diamonds
622
Divisors
838
Emirp Numbers
310
Evil Numbers
563
Fibonacci
960
Fizz Buzz
859
Happy Numbers
434
Kolakoski Sequence
423
Leap Years
808
Look and Say
505
Niven Numbers
878
Odious Numbers
558
Ordinal Numbers
657
Pangram Grep
620
Pernicious Numbers
563
Prime Numbers
668
Quine
941
Recamán
604
Rule 110
464
Seven Segment
276
Spelling Numbers
544
Tongue-twisters
412
United States
135
Vampire Numbers
104
Van Eck Sequence
611
π
985724745637203
τ
9558
200
φ
87
168
√2
82
203
𝑒
86
160