A146200 Number of n X n arrays of squares of integers with every (n-3)X(n-3) subblock summing to 6 and every element equal to at least one neighbor.
0, 168, 107441, 902774, 3692732, 11295174, 28865676, 65031988, 133191360, 253050012, 452373900, 768956436, 1252803248, 1968533980
Offset: 5