A159207 - OEIS

A159207

Number of n X n arrays of squares of integers with every 3X3 subblock summing to 7

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

%S 540,4128,19028,64440,278516,945816,2788452,10699008,34672388,

%T 103376592,390361412,1299118848,4097433060

%N Number of n X n arrays of squares of integers with every 3X3 subblock summing to 7

%K nonn

%O 3,1

%A _R. H. Hardin_ Apr 06 2009