A049250 Smallest nonnegative value taken on by 11x^2 - ny^2 for an infinite number of integer pairs (x, y).

2, 1, 8, 7, 6, 3, 1, 3, 2, 1, 0, 11, 11, 2, 11, 11, 3, 9, 1, 11, 11, 11, 7, 3, 11, 2, 8, 4, 3, 5, 11, 3, 11, 10, 1, 8, 7, 6, 5, 4, 3, 2, 1, 0, 11, 11, 11, 11, 2, 1, 3, 11, 6, 5, 11, 8, 11, 2, 8, 11, 11, 3, 9, 11, 11, 11, 7, 3, 11, 11, 11, 11, 11, 1, 11, 4, 11, 2, 1, 11, 2, 11, 1, 11, 11, 6