Erroneous version of A039686.

Terms

a(0) =49a(1) =169a(2) =1225a(3) =1444a(4) =1681a(5) =3249a(6) =4225a(7) =4900a(8) =15625a(9) =16900a(10) =42025a(11) =49729a(12) =64009