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Number of n X n binary arrays symmetric under horizontal 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 1,1,1,1,7,1,28,9,229,55,5513,1233,246733,35489,18835539,2205048,

%T 2577591714,236261747,672360073942,49798609885,337403612881491,

%U 18952604466995,317710878094077132,13788718527302227

%N Number of n X n binary arrays symmetric under horizontal reflection with all ones connected only in a 00100-00100-11111 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 .0.0.1.0.0.1.0.0

%e .0.0.1.0.0.1.0.0

%e .1.1.1.0.0.1.1.1

%e .0.0.1.0.0.1.0.0

%e .0.0.1.0.0.1.0.0

%K nonn

%O 1,5

%A _R. H. Hardin_, Nov 04 2008