I didn't even know about ".get()", thanks for teaching me it!

Wow, this one is the most clever solution I have seen up to date

pain

Huh thank you for that I also made his mistake

Thanks for showing me how much of a dumbass I actually am.

challenge accepted! (look at my solution)

I like the use of join and " " with split()
Clever and good to know for string operations :)

Thanks for showing me you can multiply arrays like that

Nice. For those confused why this works, see my solution: it has some comments to explain it.

As others pointed out, you should set a lower bound for a to avoid unnecessary computations.

Didn't I learned to read?

It can become faster by changing range as well as make only one rule for if, proof is my solution
Good Coding

This could run much faster if you replace starting point of a by: n/sqrt(2). Easily provable.

This was my third choice.