Use strong induction to prove that
I'm not sure how to go about this. I used base cases n=2, and n=3 but I'm having trouble with the actual induction part.
I said this as my Induction Hypothesis: Suppose the claim is true for n=2, 3, ... ,k. We must show it holds for n=k+1.
Not sure where to go from there :T.
Thanks in advance for help.