12 Days of Christmas
27th
99 Bottles of Beer
31st150th
Abundant Numbers
37th63rd40th214th
Abundant Numbers (Long)
36th38th53rd118th
Arabic to Roman
19th
Arithmetic Numbers
23rd
31st84th
Arrows
15th
19th
Catalan Numbers
20th
Christmas Trees
31st
Collatz
45th
45th
Day of Week
32nd
Divisors
59th
Evil Numbers
94th
Evil Numbers (Long)
55th
Fibonacci
115th
108th185th
Fizz Buzz
135th98th
79th1st
Leap Years
85th
Levenshtein Distance
15th
Look and Say
16th
Niven Numbers
80th
Niven Numbers (Long)
45th
Odious Numbers
82nd
Odious Numbers (Long)
51st
Ordinal Numbers
22nd
Pangram Grep
49th
Prime Numbers
50th
Prime Numbers (Long)
39th
Quine
48th
Time Distance
13th
Tongue-twisters
22nd
π
33rd