12 Days of Christmas
680
99 Bottles of Beer
641
Abundant Numbers
586
Arabic to Roman
601
Christmas Trees
478
CSS Colors
117
Cubes
336
Diamonds
397
Divisors
690
831
Emirp Numbers
573
Evil Numbers
568
753
Fibonacci
840
Fizz Buzz
545364667
Happy Numbers
684
Leap Years
783
745
Leyland Numbers
122
Morse Decoder
347
Morse Encoder
385
Niven Numbers
633
Odious Numbers
562
725
Ordinal Numbers
234
Pangram Grep
362
Pascal’s Triangle
168
Pernicious Numbers
542
Prime Numbers
586
846
Quine
684
Rock-paper-scissors-Spock-lizard
610
Roman to Arabic
311
Rule 110
18
Seven Segment
374
Sierpiński Triangle
484
Tongue-twisters
646
United States
278
Vampire Numbers
212
λ
256
π
223
τ
224
φ
189
√2
228
𝑒
177