A146502 - OEIS

A146502

Number of n X n arrays of squares of integers with every (n-1)X(n-1) subblock summing to 15 and every element equal to at least one neighbor.

%I #4 Dec 18 2015 18:17:14

%S 0,186,41444,7687870,8221000176,599346431860

%N Number of n X n arrays of squares of integers with every (n-1)X(n-1) subblock summing to 15 and every element equal to at least one neighbor.

%K nonn

%O 3,2

%A _R. H. Hardin_ Apr 14 2009