12 Days of Christmas
658
99 Bottles of Beer
605
Abundant Numbers
574
Arabic to Roman
517
Christmas Trees
431
CSS Colors
175
Cubes
191
Diamonds
326
Divisors
668
748
Emirp Numbers
716
Evil Numbers
535
685
Fibonacci
631
782
Fizz Buzz
536358635
Happy Numbers
727
Leap Years
759
669
Leyland Numbers
110
Morse Decoder
259
Morse Encoder
200
Niven Numbers
585
Odious Numbers
526
658
Ordinal Numbers
233
Pangram Grep
334
Pascal’s Triangle
149
Pernicious Numbers
496
Prime Numbers
574
772
Quine
625
Rock-paper-scissors-Spock-lizard
605
Roman to Arabic
270
Rule 110
10
Seven Segment
333
Sierpiński Triangle
361
Tongue-twisters
718
United States
253
Vampire Numbers
278
λ
527
π
204
τ
201
φ
169
√2
205
𝑒
161