12 Days of Christmas
597
99 Bottles of Beer
411
Abundant Numbers
575
576
Arabic to Roman
Arrows
291
ASCII Table
409
Catalan Numbers
72
Catalan’s Constant
250
Christmas Trees
314
Collatz
597
CSS Colors
134
Day of Week
690
Divisors
540
Emirp Numbers
336
466
Emirp Numbers (Long)
400
511
Emojify
243
Evil Numbers
485
501
Evil Numbers (Long)
491
558
Fibonacci
456
490
538
Fizz Buzz
577
Foo Fizz Buzz Bar
638
667
582
474
Fractions
538
451
Happy Numbers
298
Happy Numbers (Long)
422
Hexdump
366
ISBN
444
Kolakoski Constant
232
Kolakoski Sequence
290
Leap Years
673
Levenshtein Distance
664
Leyland Numbers
575
Look and Say
230
Lucky Numbers
386
Morse Decoder
171
Morse Encoder
195
Musical Chords
94
Niven Numbers
687
Niven Numbers (Long)
780
Odious Numbers
551
595
Odious Numbers (Long)
563
590
Ordinal Numbers
305
Pangram Grep
395
Pascal’s Triangle
361
Pernicious Numbers
276
Poker
255
Prime Numbers
437
463
Prime Numbers (Long)
448
Recamán
393
Roman to Arabic
493
396
Seven Segment
282
Sierpiński Triangle
140
Smith Numbers
324
Spelling Numbers
295
Time Distance
425
Tongue-twisters
664
United States
145
Van Eck Sequence
213
λ
499
π
180
τ
105
φ
103
√2
126
𝑒
149