12 Days of Christmas
27th
99 Bottles of Beer
26th166th
Abundant Numbers
32nd59th23rd200th
Abundant Numbers (Long)
32nd36th20th108th
Arabic to Roman
14th
Arithmetic Numbers
21st
23rd71st
Arrows
12th
13th
Catalan Numbers
15th
Christmas Trees
26th
Collatz
40th
20th
Day of Week
25th
Divisors
44th
Evil Numbers
87th
Evil Numbers (Long)
49th
Fibonacci
106th
74th168th
Fizz Buzz
130th92nd
33rd1st
Leap Years
71st
Levenshtein Distance
13th
Look and Say
11th
Niven Numbers
73rd
Niven Numbers (Long)
35th
Odious Numbers
76th
Odious Numbers (Long)
45th
Ordinal Numbers
20th
Pangram Grep
41st
Prime Numbers
32nd
Prime Numbers (Long)
20th
Quine
25th
Time Distance
10th
Tongue-twisters
17th
π
34th