a(n) = 8000*n - 40.

Terms

a(0) =7960a(1) =15960a(2) =23960a(3) =31960a(4) =39960a(5) =47960a(6) =55960a(7) =63960a(8) =71960a(9) =79960a(10) =87960a(11) =95960a(12) =103960a(13) =111960a(14) =119960a(15) =127960a(16) =135960a(17) =143960a(18) =151960a(19) =159960a(20) =167960a(21) =175960a(22) =183960a(23) =191960a(24) =199960a(25) =207960a(26) =215960a(27) =223960a(28) =231960a(29) =239960