According to the steps of mathematical induction, we must first verify that the proposition holds when n takes the first value;

Combined with this problem, it is verified that when n= 1, left =2 1=2, right = 12= 1, because 2 > 1 holds, and 2n≥n2 holds.

So the answer is: when n= 1, 2≥ 1 holds.