Imprimitively but not primitively represented by (x^2+xy+2y^2, x>=0, y>=0).

Terms

a(0) =9a(1) =16a(2) =18a(3) =25a(4) =36a(5) =49a(6) =50a(7) =72a(8) =81a(9) =98a(10) =99a(11) =100a(12) =121a(13) =126a(14) =144a(15) =162a(16) =169a(17) =196a(18) =198a(19) =200a(20) =207a(21) =224a(22) =225a(23) =252a(24) =275a(25) =288a(26) =289a(27) =324a(28) =333a(29) =338