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Number of n X n binary arrays with all ones connected only in a 01000-11111-01000 pattern in any orientation.
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%I #4 Mar 31 2012 12:35:14

%S 1,1,1,1,13,57,277,2427,27961,440433,11044775,365499077,16910160525,

%T 1114224590577

%N Number of n X n binary arrays with all ones connected only in a 01000-11111-01000 pattern in any orientation.

%e Maximal 8 X 8 example

%e .0.1.0.0.1.0.0.0

%e .0.1.0.1.1.1.1.1

%e .0.1.0.0.1.0.0.0

%e .1.1.1.0.0.0.1.0

%e .0.1.0.0.0.1.1.1

%e .0.0.0.1.0.0.1.0

%e .1.1.1.1.1.0.1.0

%e .0.0.0.1.0.0.1.0

%K nonn

%O 1,5

%A _R. H. Hardin_, Nov 04 2008