A147444 - OEIS

A147444

Number of n X n binary arrays with all ones connected only in a 11000-01100-00110-00011 pattern in any orientation.

%I #4 Mar 31 2012 12:35:17

%S 1,1,1,1,9,33,169,1097,10553,189871,4385605,121876221,4534799043

%N Number of n X n binary arrays with all ones connected only in a 11000-01100-00110-00011 pattern in any orientation.

%e Maximal 8 X 8 example

%e .0.0.0.0.0.1.1.0

%e .0.0.0.0.1.1.0.1

%e .0.0.0.1.1.0.1.1

%e .0.0.1.1.0.1.1.0

%e .1.1.0.0.1.1.0.0

%e .0.1.1.0.1.0.0.0

%e .0.0.1.1.0.0.0.0

%e .0.0.0.1.1.0.0.0

%K nonn

%O 1,5

%A _R. H. Hardin_