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Number of n X n binary arrays with all ones connected only in a 1100-1111-0010 pattern in any orientation.
0

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

%S 1,1,1,17,49,329,4359,91969,2747799,116126725,8159527395,914171765779,

%T 153266923609199

%N Number of n X n binary arrays with all ones connected only in a 1100-1111-0010 pattern in any orientation.

%e Maximal 8 X 8 example

%e .0.0.1.1.0.0.0.0

%e .0.0.1.1.1.1.0.0

%e .0.0.0.0.1.0.1.0

%e .0.0.0.0.0.1.1.0

%e .0.1.0.0.1.0.1.1

%e .1.1.0.1.1.0.1.1

%e .0.1.1.0.1.1.0.0

%e .0.1.1.0.1.1.0.0

%K nonn

%O 1,4

%A _R. H. Hardin_, Nov 04 2008