12 Days of Christmas
414
99 Bottles of Beer
412
Abundant Numbers
572569
Arabic to Roman
133
Arrows
288
ASCII Table
394
Catalan Numbers
63
Catalan’s Constant
252
Christmas Trees
311
Collatz
592
CSS Colors
136
Day of Week
692
Divisors
531
Emirp Numbers
335462
Emirp Numbers (Long)
398504
Emojify
239
Evil Numbers
485499
Evil Numbers (Long)
489555
Fibonacci
454487537
Fizz Buzz
575
Foo Fizz Buzz Bar
641668582474
Fractions
541456
Happy Numbers
294
Happy Numbers (Long)
417
Hexdump
368
ISBN
440
Kolakoski Constant
232
Kolakoski Sequence
292
Leap Years
641
Levenshtein Distance
658
Leyland Numbers
563
Look and Say
227
Lucky Numbers
358
Morse Decoder
169
Morse Encoder
193
Musical Chords
93
Niven Numbers
676
Niven Numbers (Long)
763
Odious Numbers
549589
Odious Numbers (Long)
559582
Ordinal Numbers
305
Pangram Grep
389
Pascal’s Triangle
357
Pernicious Numbers
272
Poker
256
Prime Numbers
436463
Prime Numbers (Long)
447
Recamán
383
Roman to Arabic
490391
Seven Segment
278
Sierpiński Triangle
136
Smith Numbers
312
Spelling Numbers
299
Time Distance
418
Tongue-twisters
663
United States
145
Van Eck Sequence
210
λ
501
π
179
τ
105
φ
102
√2
104
𝑒
145