please help help me okay

Question

Enter the first 4 terms of the sequence defined by the rule given.

f(n) = n2/2

The first 4 terms are _______ , ______, _________ ,________-

Answer 1

f(1) = 1² / 2

f(2) = 2² / 2

f(3) = 3² / 2

f(4) = 4² / 2