12 Days of Christmas
630
99 Bottles of Beer
433
Abundant Numbers
593683
Arabic to Roman
Arrows
263
ASCII Table
422
Catalan Numbers
72
Catalan’s Constant
143
Christmas Trees
333
Collatz
634
CSS Colors
266
Day of Week
746
Divisors
563
Emirp Numbers
395557
Emirp Numbers (Long)
423553
Emojify
306
Evil Numbers
500528
Evil Numbers (Long)
513600
Fibonacci
465507545
Fizz Buzz
589
Foo Fizz Buzz Bar
689687613606
Fractions
568504
Happy Numbers
438
Happy Numbers (Long)
461
Hexdump
406
ISBN
487
Kolakoski Constant
134
Kolakoski Sequence
316
Leap Years
687
Levenshtein Distance
691
Leyland Numbers
623
Look and Say
248
Lucky Numbers
395
Morse Decoder
183
Morse Encoder
240
Musical Chords
105
Niven Numbers
724
Niven Numbers (Long)
833
Odious Numbers
569627
Odious Numbers (Long)
591633
Ordinal Numbers
328
Pangram Grep
433
Pascal’s Triangle
388
Pernicious Numbers
292
Poker
289
Prime Numbers
450489
Prime Numbers (Long)
484
Recamán
415
Roman to Arabic
516439
Seven Segment
304
Sierpiński Triangle
144
Smith Numbers
355
Spelling Numbers
339
Time Distance
463
Tongue-twisters
706
United States
156
Van Eck Sequence
229
λ
674
π
120
τ
118
φ
117
√2
120
𝑒
83