12 Days of Christmas
842
99 Bottles of Beer
722
Abundant Numbers
787
Arabic to Roman
538
Christmas Trees
561
CSS Colors
51
Cubes
617
Diamonds
669
Divisors
888
Emirp Numbers
492
Evil Numbers
607
Fibonacci
1,000
Fizz Buzz
881
Happy Numbers
634
Kolakoski Sequence
475
Leap Years
908
Look and Say
552
Niven Numbers
968
Odious Numbers
618
Ordinal Numbers
702
Pangram Grep
673
Pernicious Numbers
604
Prime Numbers
827
Quine
1,000
Recamán
657
Rule 110
508
Seven Segment
316
Spelling Numbers
669
Tongue-twisters
693
United States
193
Vampire Numbers
113
Van Eck Sequence
669
π
1075925946447223
τ
10661
224
φ
96
188
√2
89
227
𝑒
94
177