a(n) = 256*n^2 + 16.

Terms

a(0) =16a(1) =272a(2) =1040a(3) =2320a(4) =4112a(5) =6416a(6) =9232a(7) =12560a(8) =16400a(9) =20752a(10) =25616a(11) =30992a(12) =36880a(13) =43280a(14) =50192a(15) =57616a(16) =65552a(17) =74000a(18) =82960a(19) =92432a(20) =102416a(21) =112912a(22) =123920a(23) =135440a(24) =147472a(25) =160016a(26) =173072a(27) =186640a(28) =200720a(29) =215312