The DeLaupers Sure Wanna Have Fun!

Uncle Jeff, Noted Astrophysicist, sent me a fabulous activity last night. I know you guys think I'm always at the mall with Guido Menudo, but really I like puzzles and dead languages as much as the next guy, this next guy being Jeff de Lauper, Noted Astrophysicist. You can try cracking the code too, and if you want help, click on the links for hints - I know you're going to love it (especially Deanna, crossword puzzle champion of the world.)


There is a fictional horse that will listen to a number you say and tap its hoof a certain number of times in response. This horse's answers follow a rule so that if you say the numbers on the left below, the horse will tap its hoof the number of times on the right below. Can you figure out how many times the horse will tap its hoof if you say 33?

1 -> 1
2 -> 2
3 -> 3
4 -> 2
5 -> 1
6 -> 2
7 -> 3
8 -> 4
9 -> 2
10 -> 1
11 -> 2
12 -> 3
13 -> 4
14 -> 3
15 -> 2
20 -> 2
25 -> 3
33 -> ?
50 -> 1