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Number of n X n binary arrays symmetric under horizontal reflection with all ones connected only in a 1111-1111 pattern in any orientation.
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%I #4 Mar 31 2012 12:35:14

%S 1,1,1,5,3,15,9,102,95,2114,1457,60876,28065,3284271,1326313,

%T 274823476,104019594,40810011642,14395862201,12062032991695,

%U 3759057255808,6192269975577293,1643495670333065,5604084539368225288

%N Number of n X n binary arrays symmetric under horizontal reflection with all ones connected only in a 1111-1111 pattern in any orientation.

%e Maximal 8 X 8 example

%e .0.0.1.1.1.1.0.0

%e .0.0.1.1.1.1.0.0

%e .0.0.0.0.0.0.0.0

%e .0.0.0.0.0.0.0.0

%e .1.1.0.1.1.0.1.1

%e .1.1.0.1.1.0.1.1

%e .1.1.0.1.1.0.1.1

%e .1.1.0.1.1.0.1.1

%K nonn

%O 1,4

%A _R. H. Hardin_, Nov 04 2008