Abundant Numbers
178th
Arabic to Roman
128th
Christmas Trees
109th
Divisors
142nd
Evil Numbers
168th
Fibonacci
181st
Fizz Buzz
413th
Happy Numbers
158th
Leap Years
231st
Levenshtein Distance
69th
Leyland Numbers
87th
Niven Numbers
1st
Odious Numbers
151st
Ordinal Numbers
136th
Pangram Grep
121st
Prime Numbers
235th
Quine
33rd