N^2 - (N-1)^2 + (N-2)^2 - (N-3)^2 + ... 1 =

1 + 2 + 3 + ... N

I am trying to prove the statement above by using induction however, I am not sure what the statement means

First I tried to find a base case when N=1

1^2 + 1 = 1 which is not true

Can someone please help me out? Thanks