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A147013 Number of n X n binary arrays symmetric under horizontal and vertical reflection with all ones connected only in a 01000-11111-00010 pattern in any orientation. 0

%I #4 Mar 31 2012 12:35:14

%S 1,1,1,1,1,1,1,1,1,1,13,13,57,57,273,273,2363,2363,27689,27689,439785,

%T 439785,10940975,10940975,360992565,360992565

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

%e Maximal 11 X 11 example

%e .0.0.0.1.0.0.0.1.0.0.0

%e .0.0.0.1.1.0.1.1.0.0.0

%e .0.0.0.1.0.0.0.1.0.0.0

%e .0.0.1.1.0.0.0.1.1.0.0

%e .0.0.0.1.0.0.0.1.0.0.0

%e .0.0.0.0.0.0.0.0.0.0.0

%e .0.0.0.1.0.0.0.1.0.0.0

%e .0.0.1.1.0.0.0.1.1.0.0

%e .0.0.0.1.0.0.0.1.0.0.0

%e .0.0.0.1.1.0.1.1.0.0.0

%e .0.0.0.1.0.0.0.1.0.0.0

%K nonn

%O 1,11

%A _R. H. Hardin_, Nov 04 2008

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