12 Days of Christmas
804
99 Bottles of Beer
914
Abundant Numbers
545
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Catalan’s Constant
75
CSS Colors
604
Cubes
50
405
Day of Week
814
Diamonds
64
Divisors
625
Emirp Numbers
661
Emojify
545
Evil Numbers
472
Fibonacci
608
Fizz Buzz
736916271828616565
986
Foo Fizz Buzz Bar
13
Happy Numbers
526
Happy Numbers (Long)
143
Kaprekar Numbers
405
Kolakoski Constant
80
Kolakoski Sequence
54
Leap Years
814
Levenshtein Distance
535
Leyland Numbers
74
ln 2
59
Look and Say
673
Morse Decoder
546
Morse Encoder
402
Niven Numbers
562
Odious Numbers
451
Pascal’s Triangle
64
Pernicious Numbers
339
Poker
346
Prime Numbers
563
Prime Numbers (Long)
1167
Quine
962
Recamán
54
Rock-paper-scissors-Spock-lizard
478
ROT13
778
Sierpiński Triangle
504
Smith Numbers
41
Spelling Numbers
593
Tic-tac-toe
563
Tongue-twisters
523
United States
349
Vampire Numbers
92
Van Eck Sequence
16
λ
185
π
638
τ
70
φ
56
√2
58
𝑒
56