12 Days of Christmas
657
99 Bottles of Beer
605
Abundant Numbers
573
Arabic to Roman
528
Christmas Trees
428
CSS Colors
175
Cubes
190
Diamonds
353
Divisors
667
745
Emirp Numbers
713
Evil Numbers
555
681
Fibonacci
778
Fizz Buzz
536358641
Happy Numbers
723
Leap Years
758
684
Leyland Numbers
110
Morse Decoder
293
Morse Encoder
215
Niven Numbers
583
Odious Numbers
536
654
Ordinal Numbers
233
Pangram Grep
333
Pascal’s Triangle
148
Pernicious Numbers
495
Prime Numbers
573
770
Quine
626
Rock-paper-scissors-Spock-lizard
682
Roman to Arabic
270
Rule 110
10
Seven Segment
333
Sierpiński Triangle
359
Tongue-twisters
717
United States
253
Vampire Numbers
278
λ
525
π
203
τ
201
φ
169
√2
205
𝑒
161