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

Terms

a(0) =258a(1) =1028a(2) =2310a(3) =4104a(4) =6410a(5) =9228a(6) =12558a(7) =16400a(8) =20754a(9) =25620a(10) =30998a(11) =36888a(12) =43290a(13) =50204a(14) =57630a(15) =65568a(16) =74018a(17) =82980a(18) =92454a(19) =102440a(20) =112938a(21) =123948a(22) =135470a(23) =147504a(24) =160050a(25) =173108a(26) =186678a(27) =200760a(28) =215354a(29) =230460