A146437 - OEIS

A146437

Number of n X n binary arrays with all ones connected only in a 1100-0100-0111 pattern in any orientation.

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

%S 1,1,1,17,57,337,4357,135183,3521533,135176521,9933992919,

%T 1311405922839

%N Number of n X n binary arrays with all ones connected only in a 1100-0100-0111 pattern in any orientation.

%e Maximal 8 X 8 example

%e .0.1.1.1.0.0.0.1

%e .0.1.0.0.0.1.1.1

%e .1.1.0.0.0.1.0.0

%e .0.0.1.0.0.1.0.0

%e .1.1.1.0.0.0.0.1

%e .1.0.0.1.1.0.0.1

%e .1.0.0.1.0.1.1.1

%e .0.1.1.1.0.1.0.0

%K nonn

%O 1,4

%A _R. H. Hardin_