12 Days of Christmas
657
99 Bottles of Beer
605
Abundant Numbers
573
Arabic to Roman
517
Christmas Trees
429
CSS Colors
175
Cubes
190
Diamonds
326
Divisors
667
746
Emirp Numbers
714
Evil Numbers
555
683
Fibonacci
779
Fizz Buzz
536358634
Happy Numbers
725
Leap Years
758
667
Leyland Numbers
110
Morse Decoder
259
Morse Encoder
200
Niven Numbers
583
Odious Numbers
536
656
Ordinal Numbers
233
Pangram Grep
334
Pascal’s Triangle
149
Pernicious Numbers
495
Prime Numbers
574
771
Quine
628
Rock-paper-scissors-Spock-lizard
605
Roman to Arabic
270
Rule 110
10
Seven Segment
333
Sierpiński Triangle
359
Tongue-twisters
717
United States
253
Vampire Numbers
277
λ
526
π
204
τ
201
φ
169
√2
205
𝑒
161