Question 260265
You can get h(4) because you know h(4 -1) = h(3).
Then you work your way up.

h(3) = -17

h(4) = h(x-1) + 4x
    = h(4 - 1) + 4*4
    = h(3) + 16
    = -17 + 16
    = -1

h(5) = h(x-1) + 4x
    = h(5 - 1) + 4*5
    = h(4) + 20
    = -1 + 20
    = 19

h(6) = h(x-1) + 4x
    = h(6 - 1) + 4*6
    = h(5) + 24
    = 19 + 24
    = 43

h(7) = h(x-1) + 4x
    = h(7 - 1) + 4*7
    = h(6) + 28
    = 43 + 28
    = 71