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%I #6 Dec 03 2015 12:16:15
%S 1,1,1,2,16,79,456,2194,20801,142675,1104671,7604426,61694634,
%T 451816635,3436067731,25239520503,319613046628,3036006671645,
%U 30933754595164,285945150234342,3026592170353007,28992125588332051,285889488934911134
%N Number of nX1 0..n*1-1 arrays with upper left zero and lower right n*1-1 and each element differing from its horizontal and vertical neighbors by a power of two.
%C Column 1 of A265178.
%H R. H. Hardin, <a href="/A265173/b265173.txt">Table of n, a(n) for n = 1..210</a>
%e All solutions for n=5
%e ..0....0....0....0....0....0....0....0....0....0....0....0....0....0....0....0
%e ..1....4....2....2....1....2....1....4....2....2....2....4....4....1....2....2
%e ..0....2....1....1....2....4....2....3....1....0....4....2....0....3....4....3
%e ..2....3....0....3....0....3....3....2....2....2....2....0....2....2....0....2
%e ..4....4....4....4....4....4....4....4....4....4....4....4....4....4....4....4
%Y Cf. A265178.
%K nonn
%O 1,4
%A _R. H. Hardin_, Dec 03 2015
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