12 Days of Christmas
429
99 Bottles of Beer
650
Abundant Numbers
545
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Catalan’s Constant
75
CSS Colors
574
Cubes
66
343
Day of Week
814
Diamonds
64
Divisors
625
Emirp Numbers
594
Emojify
590
Evil Numbers
472
Fibonacci
608
Fizz Buzz
736916271828616565
986
Foo Fizz Buzz Bar
13
Happy Numbers
434
Happy Numbers (Long)
143
Kaprekar Numbers
405
Kolakoski Constant
80
Kolakoski Sequence
54
Leap Years
813
Levenshtein Distance
468
Leyland Numbers
74
ln 2
59
Look and Say
673
Morse Decoder
474
Morse Encoder
330
Niven Numbers
562
Odious Numbers
451
Pascal’s Triangle
64
Pernicious Numbers
339
Poker
307
Prime Numbers
563
Prime Numbers (Long)
1167
Quine
962
Recamán
54
Rock-paper-scissors-Spock-lizard
430
ROT13
737
Sierpiński Triangle
493
Smith Numbers
41
Spelling Numbers
372
Tic-tac-toe
563
Tongue-twisters
349
United States
322
Vampire Numbers
83
Van Eck Sequence
16
λ
134
π
638
τ
70
φ
56
√2
58
𝑒
56