12 Days of Christmas
27th
99 Bottles of Beer
32nd151st
Abundant Numbers
39th64th41st216th
Abundant Numbers (Long)
38th39th54th119th
Arabic to Roman
20th
Arithmetic Numbers
24th
33rd87th
Arrows
15th
19th
Catalan Numbers
21st
Christmas Trees
31st
Collatz
47th
45th
Day of Week
34th
Divisors
60th
Evil Numbers
94th
Evil Numbers (Long)
55th
Fibonacci
121st
111th190th
Fizz Buzz
135th99th
81st1st
Leap Years
86th
Levenshtein Distance
16th
Look and Say
17th
Niven Numbers
81st
Niven Numbers (Long)
45th
Odious Numbers
82nd
Odious Numbers (Long)
51st
Ordinal Numbers
23rd
Pangram Grep
49th
Prime Numbers
50th
Prime Numbers (Long)
40th
Quine
51st
Time Distance
13th
Tongue-twisters
22nd
π
34th