a(n) = 900*n^2 + 2*n.

Terms

a(0) =902a(1) =3604a(2) =8106a(3) =14408a(4) =22510a(5) =32412a(6) =44114a(7) =57616a(8) =72918a(9) =90020a(10) =108922a(11) =129624a(12) =152126a(13) =176428a(14) =202530a(15) =230432a(16) =260134a(17) =291636a(18) =324938a(19) =360040a(20) =396942a(21) =435644a(22) =476146a(23) =518448a(24) =562550a(25) =608452a(26) =656154a(27) =705656a(28) =756958a(29) =810060