A146366 - OEIS

A146366

Number of n X n binary arrays symmetric under horizontal reflection with all ones connected only in a 0100-1111-0010 pattern in any orientation.

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

%S 1,1,1,1,1,1,9,11,177,319,3003,6719,139575,376577,21426367,72064749,

%T 6669830837,27576142719,4258398011821,21562611148069,6466129232821053,

%U 40212251188406927,23038062541403770861,176166950254157836203

%N Number of n X n binary arrays symmetric under horizontal reflection with all ones connected only in a 0100-1111-0010 pattern in any orientation.

%e Maximal 8 X 8 example

%e .0.0.0.0.0.0.0.0

%e .0.1.0.0.0.0.1.0

%e .0.1.1.0.0.1.1.0

%e .1.1.0.0.0.0.1.1

%e .0.1.0.0.0.0.1.0

%K nonn

%O 1,7

%A _R. H. Hardin_