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Number of n X n binary arrays symmetric under horizontal reflection with all ones connected only in a 00100-11111-00100 pattern in any orientation.
0

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

%S 1,1,1,1,5,1,13,5,80,15,1622,239,39282,4131,1538621,99155,127226887,

%T 5960881,16725872953,549694386,3916428224133

%N Number of n X n binary arrays symmetric under horizontal reflection with all ones connected only in a 00100-11111-00100 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 .0.1.0.0.0.0.1.0

%e .0.1.0.0.0.0.1.0

%e .1.1.1.0.0.1.1.1

%e .0.1.0.0.0.0.1.0

%e .0.1.0.0.0.0.1.0

%K nonn

%O 1,5

%A _R. H. Hardin_, Nov 04 2008