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Number of n X n binary arrays symmetric under horizontal and vertical reflection with all ones connected only in a 00100-00100-11111 pattern in any orientation.
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%I #4 Mar 31 2012 12:35:14

%S 1,1,1,1,1,1,6,1,15,1,79,13,545,41,5277,308,66438,2695,1162610,29727,

%T 27605281,454197,898228670,10169685,40179297824,297550563

%N Number of n X n binary arrays symmetric under horizontal and vertical reflection with all ones connected only in a 00100-00100-11111 pattern in any orientation.

%e Maximal 9 X 9 example

%e .0.0.0.0.0.0.0.0.0

%e .0.0.1.1.1.1.1.0.0

%e .1.0.0.0.1.0.0.0.1

%e .1.0.0.0.1.0.0.0.1

%e .1.1.1.0.0.0.1.1.1

%e .1.0.0.0.1.0.0.0.1

%e .1.0.0.0.1.0.0.0.1

%e .0.0.1.1.1.1.1.0.0

%e .0.0.0.0.0.0.0.0.0

%K nonn

%O 1,7

%A _R. H. Hardin_, Nov 04 2008