12 Days of Christmas
830
99 Bottles of Beer
706
Abundant Numbers
813
Arabic to Roman
574
362
Arrows
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Christmas Trees
582
CSS Colors
213
Cubes
47
Diamonds
491
Divisors
845
Emirp Numbers
696
Evil Numbers
662
Fibonacci
920
Fizz Buzz
758
Fractions
550
Happy Numbers
610
Happy Numbers (Long)
552
Kolakoski Constant
115
Kolakoski Sequence
29
Leap Years
885
Leyland Numbers
134
Look and Say
62
Niven Numbers
907
Odious Numbers
662
Ordinal Numbers
538
Pangram Grep
Pascal’s Triangle
520
Pernicious Numbers
414
Prime Numbers
867
357
Quine
1,000
82
1,000
923
541
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
74
Rule 110
Sierpiński Triangle
102
Smith Numbers
51
Tongue-twisters
532
United States
179
Vampire Numbers
112
Van Eck Sequence
25
λ
283
π
106
τ
106
φ
111
√2
109
𝑒
86