12 Days of Christmas
443
99 Bottles of Beer
665
Abundant Numbers
565
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Catalan’s Constant
79
CSS Colors
603
Cubes
73
378
Day of Week
855
Diamonds
68
Divisors
645
Emirp Numbers
617
Emojify
614
Evil Numbers
487
Fibonacci
623
Fizz Buzz
766948288847632593
1,000
Foo Fizz Buzz Bar
14
Happy Numbers
451
Happy Numbers (Long)
152
Kaprekar Numbers
448
Kolakoski Constant
85
Kolakoski Sequence
57
Leap Years
854
Levenshtein Distance
500
Leyland Numbers
78
ln 2
63
Look and Say
706
Morse Decoder
526
Morse Encoder
349
Niven Numbers
583
Odious Numbers
468
Pascal’s Triangle
67
Pernicious Numbers
354
Poker
327
Prime Numbers
581
Prime Numbers (Long)
1268
Quine
1,000
Recamán
56
Rock-paper-scissors-Spock-lizard
445
ROT13
795
Sierpiński Triangle
516
Smith Numbers
47
Spelling Numbers
397
Tic-tac-toe
603
Tongue-twisters
356
United States
333
Vampire Numbers
90
Van Eck Sequence
17
λ
152
π
659
τ
73
φ
59
√2
61
𝑒
59