A146469 - OEIS

A146469

Number of n X n binary arrays with all ones connected only in a 1110-0111 pattern in any orientation.

%I #4 Mar 31 2012 12:35:10

%S 1,1,1,13,69,457,6223,127787,3658281,163817453,11238713859,

%T 1160267254915,182817418500667

%N Number of n X n binary arrays with all ones connected only in a 1110-0111 pattern in any orientation.

%e Maximal 8 X 8 example

%e .0.1.1.1.0.1.1.1

%e .1.1.1.0.1.1.1.0

%e .0.0.0.0.0.0.0.0

%e .1.1.1.0.1.1.1.0

%e .0.1.1.1.0.1.1.1

%e .0.0.0.0.0.0.0.0

%e .1.1.1.0.1.1.1.0

%e .0.1.1.1.0.1.1.1

%K nonn

%O 1,4

%A _R. H. Hardin_