A025278 a(n) = a(1)*a(n-1) + a(2)*a(n-2) + ...+ a(n-1)*a(1) for n >= 5.

1, -1, 1, 1, 0, -1, 0, 3, 4, 0, -2, 11, 34, 36, 14, 55, 250, 484, 526, 672, 2024, 5106, 8388, 11415, 21806, 53222, 107954, 176392, 295988, 615242, 1316100, 2462955, 4271142, 8015318, 16478474, 32815776, 60660164, 111589258, 218042964, 436588372