12 Days of Christmas
657
99 Bottles of Beer
605
Abundant Numbers
573
Arabic to Roman
528
Christmas Trees
428
CSS Colors
175
Cubes
194
Diamonds
353
Divisors
667
744
Emirp Numbers
713
Evil Numbers
555
681
Fibonacci
778
Fizz Buzz
536358653
Happy Numbers
723
Leap Years
757
684
Leyland Numbers
110
Morse Decoder
293
Morse Encoder
215
Niven Numbers
582
Odious Numbers
535
654
Ordinal Numbers
233
Pangram Grep
333
Pascal’s Triangle
148
Pernicious Numbers
494
Prime Numbers
573
770
Quine
627
Rock-paper-scissors-Spock-lizard
684
Roman to Arabic
270
Rule 110
10
Seven Segment
333
Sierpiński Triangle
359
Tongue-twisters
717
United States
253
Vampire Numbers
278
λ
524
π
203
τ
200
φ
169
√2
204
𝑒
160