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%I #5 Nov 02 2013 07:13:31
%S 1,1,11,47,685,7357,223270,5447557,367167586,19728028907,
%T 2960154980175,351638142057035,116764729695106769,
%U 30699761856170182376,22542682942448533813110,13106281552221398203554555
%N Number of white square subarrays of (n+1)X(n+1) binary arrays with no element equal to a strict majority of its diagonal and antidiagonal neighbors, with upper left element zero
%C Diagonal of A230989
%H R. H. Hardin, <a href="/A230982/b230982.txt">Table of n, a(n) for n = 1..18</a>
%e Some solutions for n=6
%e ..0..x..0..x..0..x..1....0..x..1..x..0..x..0....0..x..0..x..1..x..1
%e ..x..1..x..1..x..0..x....x..1..x..0..x..1..x....x..1..x..0..x..0..x
%e ..1..x..1..x..1..x..1....0..x..1..x..1..x..1....0..x..0..x..1..x..0
%e ..x..0..x..0..x..0..x....x..0..x..1..x..0..x....x..1..x..1..x..1..x
%e ..0..x..1..x..1..x..0....1..x..0..x..0..x..0....1..x..1..x..0..x..1
%e ..x..1..x..0..x..1..x....x..0..x..1..x..1..x....x..0..x..0..x..0..x
%e ..0..x..0..x..1..x..0....1..x..1..x..0..x..0....1..x..1..x..1..x..1
%K nonn
%O 1,3
%A _R. H. Hardin_, Nov 02 2013