MISKOLC MATHEMATICAL NOTES, cilt.13, sa.2, ss.515-527, 2012 (SCI-Expanded)
In this paper, we give all the solutions of the Diophantine equation x(2) + 7(alpha) . 11(beta) = y(n), for the nonnegative integers alpha, beta, x, y, n >= 3, where x and y coprime, except when alpha.x is odd and beta is even.