12 Days of Christmas
835
99 Bottles of Beer
930
Abundant Numbers
576
Catalan’s Constant
86
CSS Colors
664
Cubes
55
473
Diamonds
68
Divisors
645
Emirp Numbers
688
Emojify
569
Evil Numbers
487
Fibonacci
623
Fizz Buzz
766
948
288
847
684
593
1,000
Foo Fizz Buzz Bar
14
Happy Numbers
549
Happy Numbers (Long)
152
Kolakoski Constant
85
Kolakoski Sequence
57
Leap Years
854
Levenshtein Distance
574
Leyland Numbers
80
Look and Say
706
Morse Decoder
649
Morse Encoder
425
Niven Numbers
583
Odious Numbers
481
Pascal’s Triangle
67
Pernicious Numbers
354
Poker
386
Prime Numbers
581
Prime Numbers (Long)
18
6
8
Quine
1,000
Recamán
56
Rock-paper-scissors-Spock-lizard
493
Sierpiński Triangle
527
Smith Numbers
47
Spelling Numbers
650
Tongue-twisters
534
United States
365
Vampire Numbers
100
Van Eck Sequence
17
λ
206
π
659
τ
73
φ
59
√2
61
𝑒
59