12 Days of Christmas
503
99 Bottles of Beer
593
Abundant Numbers
739
Abundant Numbers (Long)
864
862
Arabic to Roman
551
Arithmetic Numbers
688
Arrows
233
Ascending Primes
122
ASCII Table
302
Catalan Numbers
640
Collatz
719
CSS Colors
171
Day of Week
681
Divisors
877
Emirp Numbers
592
Emirp Numbers (Long)
658
Emojify
298
Evil Numbers
770
Evil Numbers (Long)
741
Farey Sequence
358
Fibonacci
790
Fizz Buzz
929
635
Foo Fizz Buzz Bar
900
Fractions
554
Happy Numbers
486
565
Happy Numbers (Long)
476
Leap Years
642
704
Look and Say
468
Morse Decoder
103
Morse Encoder
201
Niven Numbers
722
Niven Numbers (Long)
789
Number Spiral
247
Odious Numbers
784
Odious Numbers (Long)
783
Pangram Grep
806
790
Pascal’s Triangle
67
123
Pernicious Numbers
455
Pernicious Numbers (Long)
575
Prime Numbers
644
533
Prime Numbers (Long)
670
Quine
947
Roman to Arabic
537
ROT13
474
Smith Numbers
652
Tongue-twisters
616
United States
117
π
5084961199698100114684362839159654813213932621271075830
111135161174258950516398454013859620313677257108113111
𝑒
4259619979818895553855747946553895120245187924830
8610711513026613846466831371035921619562198827582