“…Further, for k = 2 and 3 ≤ m, n ≤ 12, m = 4, the solutions (x, y) to (2) are (m, n, x, y) = (3, 3, 8, 3), (3,5,49,5), (3,6,8,2), (3,9,288,8), (3,10, 9800, 42), (6,5,25,5), (7,4,6,3), (7,9,6,2), (8,3,9,5), (8,6,9,3), (9, 3, 2, 2), (9,3,49,13), (9,6,49,7), (9,12,18,3), (11,3,81,18), (12,3,25,…”