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Number of n X n binary arrays symmetric under horizontal reflection with all ones connected only in a 01000-11111-00010 pattern in any orientation.
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%I #4 Mar 31 2012 12:35:14

%S 1,1,1,1,1,1,7,9,21,33,561,1063,16239,37023,683049,1813981,73918361,

%T 233718771,15472778911,58161293145,6153586919161,27376781533955,

%U 5115790862761165,27018006547805491,8119404508895445151

%N Number of n X n binary arrays symmetric under horizontal reflection with all ones connected only in a 01000-11111-00010 pattern in any orientation.

%e Maximal 8 X 8 example

%e .0.0.0.0.0.0.0.0

%e .0.0.0.0.0.0.0.0

%e .0.0.0.0.0.0.0.0

%e .0.1.0.0.0.0.1.0

%e .0.1.1.0.0.1.1.0

%e .0.1.0.0.0.0.1.0

%e .1.1.0.0.0.0.1.1

%e .0.1.0.0.0.0.1.0

%K nonn

%O 1,7

%A _R. H. Hardin_, Nov 04 2008