A146203 Number of n X n arrays of squares of integers with every (n-2)X(n-2) subblock summing to 7 and every element equal to at least one neighbor.
0, 18, 79648, 1568158, 9251144, 34765154, 101461384, 250731864, 549801520, 1100971428, 2052324440, 3609891704, 6051280064
Offset: 4