a(n) = 10368*n^2 - 288*n + 1.

Terms

a(0) =10081a(1) =40897a(2) =92449a(3) =164737a(4) =257761a(5) =371521a(6) =506017a(7) =661249a(8) =837217a(9) =1033921a(10) =1251361a(11) =1489537a(12) =1748449a(13) =2028097a(14) =2328481a(15) =2649601a(16) =2991457a(17) =3354049a(18) =3737377a(19) =4141441a(20) =4566241a(21) =5011777a(22) =5478049a(23) =5965057a(24) =6472801a(25) =7001281