Need help with Q-Sequence

Question

So I'm trying to solve the Q-Sequence code coach and my code doesn't quite work. Can somebody explain why some numbers result in "No output."
https://code.sololearn.com/cWDmP4NFAqbP/?ref=app

Answer 1

To many unnecessary calculations. The function is called with the same argument many times, resulting in the same recursive calculations to compute over and over:
https://www.sololearn.com/discuss/2509780/?ref=app

Answer 2

Thanks Kevin ★
I figured it out