a(n) = 32*n^3 + 48*n^2 + 18*n + 1.

Terms

a(0) =1a(1) =99a(2) =485a(3) =1351a(4) =2889a(5) =5291a(6) =8749a(7) =13455a(8) =19601a(9) =27379a(10) =36981a(11) =48599a(12) =62425a(13) =78651a(14) =97469a(15) =119071a(16) =143649a(17) =171395a(18) =202501a(19) =237159a(20) =275561a(21) =317899a(22) =364365a(23) =415151a(24) =470449a(25) =530451a(26) =595349a(27) =665335a(28) =740601a(29) =821339