Imprimitively represented by x^2+y^2.

Terms

a(0) =4a(1) =8a(2) =9a(3) =16a(4) =18a(5) =20a(6) =25a(7) =32a(8) =36a(9) =40a(10) =45a(11) =49a(12) =50a(13) =52a(14) =64a(15) =68a(16) =72a(17) =80a(18) =81a(19) =90a(20) =98a(21) =100a(22) =104a(23) =116a(24) =117a(25) =121a(26) =125a(27) =128a(28) =136a(29) =144