A146651 - OEIS

A146651

Number of n X n binary arrays symmetric under horizontal reflection with all ones connected only in a 1100-0100-1111 pattern in any orientation.

%I #4 Mar 31 2012 12:35:11

%S 1,1,1,1,1,1,19,27,575,1125,11015,28077,425211,1200943,68898133,

%T 240563637,37717682283,167346267341,25928895855769,138290723957205,

%U 29142735143015429

%N Number of n X n binary arrays symmetric under horizontal reflection with all ones connected only in a 1100-0100-1111 pattern in any orientation.

%e Maximal 8 X 8 example

%e .0.0.0.0.0.0.0.0

%e .1.0.1.0.0.1.0.1

%e .1.1.1.0.0.1.1.1

%e .0.0.1.0.0.1.0.0

%e .1.0.1.0.0.1.0.1

%e .1.0.0.0.0.0.0.1

%e .1.1.1.0.0.1.1.1

%e .1.0.1.0.0.1.0.1

%K nonn

%O 1,7

%A _R. H. Hardin_, Nov 04 2008