Question 1147377
maximum is at vertex where t value is -b/2a, b is n and a -1.
this is at t=-n/-2 or n/2

The value is -n^2/4+n^2/2+c
Another form is (1/4)(-n^2+2n^2)+c or (n^2/4)+c or (n^2+4c)/4