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%I #5 Dec 18 2015 18:17:39
%S 1,1,1,3,3,8,20,53,141,552,2419,12788,78700,561036,4750312
%N Half the number of n X n symmetric binary matrices with no element unequal to a strict majority of its king- and knight-move neighbors
%e All solutions for n=5 with a(1,1)=0
%e ..0..0..0..0..0....0..0..0..1..1....0..0..1..1..1
%e ..0..0..0..0..0....0..0..0..1..1....0..0..1..1..1
%e ..0..0..0..0..0....0..0..0..1..1....1..1..0..0..0
%e ..0..0..0..0..0....1..1..1..0..0....1..1..0..0..0
%e ..0..0..0..0..0....1..1..1..0..0....1..1..0..0..0
%K nonn
%O 1,4
%A _R. H. Hardin_ May 16 2011
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