A147283 - OEIS

A147283

Number of n X n binary arrays with all ones connected only in a 1100-0111-0001-0001 pattern in any orientation.

%I #4 Mar 31 2012 12:35:16

%S 1,1,1,9,41,209,1201,15001,432817,13376085,514375741,28401013633

%N Number of n X n binary arrays with all ones connected only in a 1100-0111-0001-0001 pattern in any orientation.

%e Maximal 8 X 8 example

%e .0.0.0.0.1.1.1.0

%e .0.1.1.1.0.0.1.0

%e .0.1.0.0.0.0.1.1

%e .1.1.0.0.0.0.0.1

%e .1.0.1.0.1.1.0.0

%e .0.0.1.0.0.1.1.1

%e .0.0.1.1.1.0.0.1

%e .0.0.0.0.1.1.0.1

%K nonn

%O 1,4

%A _R. H. Hardin_, Nov 04 2008