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Number of n X n binary arrays with all ones connected only in a 1000-1100-0111-0100 pattern in any orientation.
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%I #4 Mar 31 2012 12:35:15

%S 1,1,1,9,33,113,789,14705,402015,10087297,406840323,29140240709,

%T 3363961380903

%N Number of n X n binary arrays with all ones connected only in a 1000-1100-0111-0100 pattern in any orientation.

%e Maximal 8 X 8 example

%e .0.1.0.0.1.1.0.0

%e .0.1.1.1.0.1.1.1

%e .1.1.0.0.0.0.1.0

%e .1.0.0.0.0.0.1.0

%e .0.1.0.0.0.0.0.1

%e .0.1.0.0.0.0.1.1

%e .1.1.1.0.1.1.1.0

%e .0.0.1.1.0.0.1.0

%K nonn

%O 1,4

%A _R. H. Hardin_, Nov 04 2008