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%I #9 Dec 26 2023 22:41:18
%S 1,2,6,242,8366,938450,202832490,99698985800,111178591581730,
%T 269624072418134792,1460886644336095222074,17525035013309709286061250,
%U 464454865764560721784272271230,27268004201542696999749244619238722
%N Half the number of n X n binary arrays with no element equal to a strict majority of its diagonal and antidiagonal neighbors.
%C Diagonal of A183402.
%H R. H. Hardin, <a href="/A183398/b183398.txt">Table of n, a(n) for n = 1..16</a>
%e Some solutions with a(1,1)=0 for 4 X 4
%e ..0..1..0..0....0..0..1..0....0..0..0..0....0..1..0..0....0..1..1..0
%e ..0..1..1..0....0..1..1..0....0..1..1..1....0..1..1..0....0..1..1..0
%e ..0..1..1..0....0..1..0..0....0..1..1..0....0..1..1..0....1..1..0..0
%e ..0..0..1..0....0..1..0..1....0..0..1..0....0..1..0..0....0..0..1..1
%Y Cf. A183402.
%K nonn
%O 1,2
%A _R. H. Hardin_, Jan 04 2011
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