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Number of n X n binary arrays symmetric under horizontal reflection with all ones connected only in a 1100-0110-0011 pattern in any orientation.
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%I #4 Mar 31 2012 12:35:10

%S 1,1,1,1,1,1,11,17,249,505,5595,13277,255723,714985,48904687,

%T 172919585,23239333565,103253283519,18873899120725,102743668838719,

%U 32633484992496285,217183989203759529,151537474245121050379

%N Number of n X n binary arrays symmetric under horizontal reflection with all ones connected only in a 1100-0110-0011 pattern in any orientation.

%e Maximal 8 X 8 example

%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 .0.0.1.0.0.1.0.0

%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 .0.0.1.0.0.1.0.0

%K nonn

%O 1,7

%A _R. H. Hardin_