12 Days of Christmas
619
99 Bottles of Beer
426
Abundant Numbers
578648
Arabic to Roman
Arrows
244
ASCII Table
405
Catalan Numbers
64
Catalan’s Constant
132
Christmas Trees
317
Collatz
602
CSS Colors
236
Day of Week
692
Divisors
541
Emirp Numbers
382526
Emirp Numbers (Long)
402513
Emojify
287
Evil Numbers
486502
Evil Numbers (Long)
492559
Fibonacci
456490538
Fizz Buzz
580
Foo Fizz Buzz Bar
647673590598
Fractions
540454
Happy Numbers
413
Happy Numbers (Long)
427
Hexdump
380
ISBN
444
Kolakoski Constant
124
Kolakoski Sequence
291
Leap Years
661
Levenshtein Distance
665
Leyland Numbers
576
Look and Say
231
Lucky Numbers
365
Morse Decoder
176
Morse Encoder
227
Musical Chords
94
Niven Numbers
694
Niven Numbers (Long)
787
Odious Numbers
552595
Odious Numbers (Long)
565592
Ordinal Numbers
309
Pangram Grep
399
Pascal’s Triangle
362
Pernicious Numbers
276
Poker
268
Prime Numbers
437464
Prime Numbers (Long)
450
Recamán
395
Roman to Arabic
497402
Seven Segment
286
Sierpiński Triangle
138
Smith Numbers
326
Spelling Numbers
299
Time Distance
440
Tongue-twisters
690
United States
148
Van Eck Sequence
213
λ
622
π
113
τ
109
φ
108
√2
111
𝑒
78