12 Days of Christmas
619
99 Bottles of Beer
423
Abundant Numbers
572614
Arabic to Roman
133
Arrows
236
ASCII Table
394
Catalan Numbers
63
Catalan’s Constant
130
Christmas Trees
311
Collatz
592
CSS Colors
240
Day of Week
691
Divisors
531
Emirp Numbers
380522
Emirp Numbers (Long)
398502
Emojify
284
Evil Numbers
485499
Evil Numbers (Long)
490560
Fibonacci
454487537
Fizz Buzz
575
Foo Fizz Buzz Bar
642669583595
Fractions
540455
Happy Numbers
406
Happy Numbers (Long)
417
Hexdump
369
ISBN
441
Kolakoski Constant
122
Kolakoski Sequence
289
Leap Years
642
Levenshtein Distance
650
Leyland Numbers
563
Look and Say
227
Lucky Numbers
357
Morse Decoder
172
Morse Encoder
224
Musical Chords
92
Niven Numbers
676
Niven Numbers (Long)
763
Odious Numbers
549589
Odious Numbers (Long)
560583
Ordinal Numbers
306
Pangram Grep
389
Pascal’s Triangle
357
Pernicious Numbers
272
Poker
267
Prime Numbers
436463
Prime Numbers (Long)
447
Recamán
383
Roman to Arabic
492397
Seven Segment
281
Sierpiński Triangle
135
Smith Numbers
312
Spelling Numbers
299
Time Distance
432
Tongue-twisters
691
United States
146
Van Eck Sequence
210
λ
621
π
112
τ
108
φ
107
√2
109
𝑒
75