a(n) = 484*n^2 + 22.

Terms

a(0) =22a(1) =506a(2) =1958a(3) =4378a(4) =7766a(5) =12122a(6) =17446a(7) =23738a(8) =30998a(9) =39226a(10) =48422a(11) =58586a(12) =69718a(13) =81818a(14) =94886a(15) =108922a(16) =123926a(17) =139898a(18) =156838a(19) =174746a(20) =193622a(21) =213466a(22) =234278a(23) =256058a(24) =278806a(25) =302522a(26) =327206a(27) =352858a(28) =379478a(29) =407066