a(n) = 1156*n^2 - 34.

Terms

a(0) =1122a(1) =4590a(2) =10370a(3) =18462a(4) =28866a(5) =41582a(6) =56610a(7) =73950a(8) =93602a(9) =115566a(10) =139842a(11) =166430a(12) =195330a(13) =226542a(14) =260066a(15) =295902a(16) =334050a(17) =374510a(18) =417282a(19) =462366a(20) =509762a(21) =559470a(22) =611490a(23) =665822a(24) =722466a(25) =781422a(26) =842690a(27) =906270a(28) =972162a(29) =1040366