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Number of n X n binary arrays symmetric under horizontal reflection with all ones connected only in a 11011-01110-00100 pattern in any orientation.
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%I #4 Mar 31 2012 12:35:17

%S 1,1,1,1,7,1,32,9,247,55,7527,1429,368384,45879,31665405,2855306,

%T 5088454688,352337351,1569436037179,84647830613,948743940167332,

%U 37496914297413,1098189573005175931,32036480319505329

%N Number of n X n binary arrays symmetric under horizontal reflection with all ones connected only in a 11011-01110-00100 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 .1.0.0.0.0.0.0.1

%e .1.1.0.0.0.0.1.1

%e .0.1.1.0.0.1.1.0

%e .1.1.0.0.0.0.1.1

%e .1.0.0.0.0.0.0.1

%K nonn

%O 1,5

%A _R. H. Hardin_