a(n) = 27225*n^2 + 2*n.

Terms

a(0) =27227a(1) =108904a(2) =245031a(3) =435608a(4) =680635a(5) =980112a(6) =1334039a(7) =1742416a(8) =2205243a(9) =2722520a(10) =3294247a(11) =3920424a(12) =4601051a(13) =5336128a(14) =6125655a(15) =6969632a(16) =7868059a(17) =8820936a(18) =9828263a(19) =10890040a(20) =12006267a(21) =13176944a(22) =14402071a(23) =15681648a(24) =17015675