12 Days of Christmas
459
99 Bottles of Beer
532
Abundant Numbers
760
Arabic to Roman
564
290
Arrows
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Christmas Trees
582
CSS Colors
114
Cubes
65
Diamonds
491
Divisors
845
Emirp Numbers
552
Evil Numbers
649
Fibonacci
900
Fizz Buzz
758
Fractions
550
Happy Numbers
447
Happy Numbers (Long)
545
Kolakoski Constant
115
Kolakoski Sequence
28
Leap Years
885
Leyland Numbers
134
Look and Say
62
Niven Numbers
907
Odious Numbers
649
Ordinal Numbers
487
Pangram Grep
Pascal’s Triangle
520
Pernicious Numbers
405
Prime Numbers
850
357
Quine
1,000
1,000
923
514
901
32
492
600
163
1,000
854
958
630
1,000
735
1,000
1,000
1,000
632
893
1,000
720
304
969
630
926
1,000
893
719
180
58
Recamán
73
Rule 110
Sierpiński Triangle
137
Smith Numbers
51
Tongue-twisters
376
United States
152
Vampire Numbers
111
Van Eck Sequence
25
λ
210
π
106
τ
106
φ
108
√2
108
𝑒
85