A146462 - OEIS

A146462

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

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

%S 1,1,1,1,1,1,17,31,679,1365,17627,46035,1583863,5152353,644498775,

%T 2733408045,569392682481,3041130002347,940096451199787,

%U 6289498795341393,4314014762481308841,36346991541862011089,57204732976870800644143

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

%e Maximal 8 X 8 example

%e .0.1.0.0.0.0.1.0

%e .1.1.1.0.0.1.1.1

%e .1.0.0.0.0.0.0.1

%e .0.0.1.0.0.1.0.0

%e .1.1.1.0.0.1.1.1

%e .0.1.0.0.0.0.1.0

%K nonn

%O 1,7

%A _R. H. Hardin_