12 Days of Christmas
443
99 Bottles of Beer
665
Abundant Numbers
576
Catalan’s Constant
86
CSS Colors
621
Cubes
73
382
Diamonds
68
Divisors
645
Emirp Numbers
628
Emojify
614
Evil Numbers
487
Fibonacci
623
Fizz Buzz
766
948
288
847
684
593
1,000
Foo Fizz Buzz Bar
14
Happy Numbers
451
Happy Numbers (Long)
152
Kolakoski Constant
85
Kolakoski Sequence
57
Leap Years
854
Levenshtein Distance
500
Leyland Numbers
80
Look and Say
706
Morse Decoder
552
Morse Encoder
349
Niven Numbers
583
Odious Numbers
481
Pascal’s Triangle
67
Pernicious Numbers
354
Poker
327
Prime Numbers
581
Prime Numbers (Long)
18
6
8Quine
1,000
Recamán
56
Rock-paper-scissors-Spock-lizard
448
Sierpiński Triangle
516
Smith Numbers
47
Spelling Numbers
397
Tongue-twisters
356
United States
333
Vampire Numbers
90
Van Eck Sequence
17
λ
154
π
659
τ
73
φ
59
√2
61
𝑒
59