12 Days of Christmas
625
99 Bottles of Beer
579
Abundant Numbers
528
Arabic to Roman
505
Christmas Trees
426
CSS Colors
104
Cubes
300
Diamonds
323
Divisors
661
736
Emirp Numbers
515
Evil Numbers
533
683
Fibonacci
615
783
Fizz Buzz
534355629
Happy Numbers
615
Leap Years
741
581
Leyland Numbers
108
Morse Decoder
297
Morse Encoder
303
Niven Numbers
571
Odious Numbers
523
652
Ordinal Numbers
228
Pangram Grep
328
Pascal’s Triangle
148
Pernicious Numbers
490
Prime Numbers
562
771
Quine
627
Rock-paper-scissors-Spock-lizard
541
Roman to Arabic
264
Rule 110
15
Seven Segment
315
Sierpiński Triangle
428
Tongue-twisters
600
United States
247
Vampire Numbers
186
λ
235
π
203
τ
200
φ
169
√2
204
𝑒
160