a(n) = 225*n^2 + n.

Terms

a(0) =226a(1) =902a(2) =2028a(3) =3604a(4) =5630a(5) =8106a(6) =11032a(7) =14408a(8) =18234a(9) =22510a(10) =27236a(11) =32412a(12) =38038a(13) =44114a(14) =50640a(15) =57616a(16) =65042a(17) =72918a(18) =81244a(19) =90020a(20) =99246a(21) =108922a(22) =119048a(23) =129624a(24) =140650a(25) =152126a(26) =164052a(27) =176428a(28) =189254a(29) =202530