a(n) = 2*n^2 + 8.

Terms

a(0) =8a(1) =10a(2) =16a(3) =26a(4) =40a(5) =58a(6) =80a(7) =106a(8) =136a(9) =170a(10) =208a(11) =250a(12) =296a(13) =346a(14) =400a(15) =458a(16) =520a(17) =586a(18) =656a(19) =730a(20) =808a(21) =890a(22) =976a(23) =1066a(24) =1160a(25) =1258a(26) =1360a(27) =1466a(28) =1576a(29) =1690