login
Number of n X n binary arrays with all ones connected only in a 1010-1111-0101 pattern in any orientation.
0

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

%S 1,1,1,9,25,89,469,5217,82459,1354121,28702995,915889909,44493843165,

%T 2922255231469

%N Number of n X n binary arrays with all ones connected only in a 1010-1111-0101 pattern in any orientation.

%e Maximal 8 X 8 example

%e .0.1.0.1.0.0.1.1

%e .1.1.1.1.0.1.1.0

%e .1.0.1.0.0.0.1.1

%e .0.0.0.0.0.1.1.0

%e .1.1.0.0.0.0.0.0

%e .0.1.1.0.0.1.0.1

%e .1.1.0.0.1.1.1.1

%e .0.1.1.0.1.0.1.0

%K nonn

%O 1,4

%A _R. H. Hardin_