I don't quite understand your code, but if I'm guessing correctly that n is an integer and "for i in n" means in human terms "for all non-negative integers less than n",
that is not exponential, that is actually factorial, which is superexponential. Uh, or close to factorial, I'm not sure exactly. Testing it in python right now, incrementing a counter each time whoops is called, I'm seeing a relationship that looks like
whoops(n) == n * whoops(n-1) + 1
That is interesting.