%I #11 Aug 19 2025 15:58:34

%S 78,48248,78006076,80623650576,59454961587150,27119097659237820,

%T 7125999523511887208,1048541072549858010880,89398941053870783184490,

%U 4759738914307357587295200,171123815205170591864878272,4439957059433222868126771008,87669075083324222734899105986

%N Number of n X n arrays of squares of integers with every (n-1) X (n-1) subblock summing to 18.

%H R. H. Hardin, <a href="/A159402/b159402.txt">Table of n, a(n) for n=3..19</a>

%K nonn

%O 3,1

%A _R. H. Hardin_, Apr 11 2009