12 Days of Christmas
379
99 Bottles of Beer
412
Abundant Numbers
572570
Arabic to Roman
133
Arrows
284
ASCII Table
391
Catalan Numbers
63
Catalan’s Constant
189
Christmas Trees
311
Collatz
592
CSS Colors
137
Day of Week
692
Divisors
531
Emirp Numbers
334461
Emirp Numbers (Long)
398503
Emojify
238
Evil Numbers
485499
Evil Numbers (Long)
489559
Fibonacci
454487537
Fizz Buzz
574
Foo Fizz Buzz Bar
639666578473
Fractions
540455
Happy Numbers
294
Happy Numbers (Long)
417
Hexdump
368
ISBN
419
Kolakoski Constant
231
Kolakoski Sequence
289
Leap Years
641
Levenshtein Distance
650
Leyland Numbers
564
Look and Say
225
Lucky Numbers
338
Morse Decoder
167
Morse Encoder
192
Musical Chords
94
Niven Numbers
677
Niven Numbers (Long)
763
Odious Numbers
549589
Odious Numbers (Long)
560583
Ordinal Numbers
303
Pangram Grep
389
Pascal’s Triangle
358
Pernicious Numbers
273
Poker
256
Prime Numbers
436463
Prime Numbers (Long)
447
Recamán
383
Roman to Arabic
490394
Seven Segment
237
Sierpiński Triangle
135
Smith Numbers
309
Spelling Numbers
296
Time Distance
419
Tongue-twisters
661
United States
144
Van Eck Sequence
210
λ
499
π
179
τ
105
φ
103
√2
104
𝑒
145