12 Days of Christmas
619
99 Bottles of Beer
426
Abundant Numbers
578
647
Arabic to Roman
Arrows
244
ASCII Table
420
Catalan Numbers
72
Catalan’s Constant
131
Christmas Trees
316
Collatz
601
CSS Colors
236
Day of Week
690
Divisors
540
Emirp Numbers
382
526
Emirp Numbers (Long)
400
511
Emojify
293
Evil Numbers
485
501
Evil Numbers (Long)
491
558
Fibonacci
456
490
538
Fizz Buzz
580
Foo Fizz Buzz Bar
645
673
589
597
Fractions
538
451
Happy Numbers
412
Happy Numbers (Long)
425
Hexdump
366
ISBN
447
Kolakoski Constant
124
Kolakoski Sequence
290
Leap Years
674
Levenshtein Distance
664
Leyland Numbers
575
Look and Say
230
Lucky Numbers
386
Morse Decoder
176
Morse Encoder
226
Musical Chords
93
Niven Numbers
693
Niven Numbers (Long)
785
Odious Numbers
551
595
Odious Numbers (Long)
563
590
Ordinal Numbers
308
Pangram Grep
397
Pascal’s Triangle
361
Pernicious Numbers
276
Poker
268
Prime Numbers
437
463
Prime Numbers (Long)
448
Recamán
395
Roman to Arabic
496
400
Seven Segment
286
Sierpiński Triangle
138
Smith Numbers
324
Spelling Numbers
295
Time Distance
448
Tongue-twisters
690
United States
148
Van Eck Sequence
213
λ
619
π
113
τ
109
φ
108
√2
111
𝑒
78