login
Number of n X n binary arrays symmetric under horizontal and vertical reflection with all ones connected only in a 00100-00100-00100-11111 pattern in any orientation.
0

%I #4 Mar 31 2012 12:35:16

%S 1,1,1,1,1,1,1,1,6,1,33,9,187,25,1110

%N Number of n X n binary arrays symmetric under horizontal and vertical reflection with all ones connected only in a 00100-00100-00100-11111 pattern in any orientation.

%e Maximal 9 X 9 example

%e .0.0.1.1.1.1.1.0.0

%e .0.0.0.0.1.0.0.0.0

%e .1.0.0.0.1.0.0.0.1

%e .1.0.0.0.1.0.0.0.1

%e .1.1.1.1.0.1.1.1.1

%e .1.0.0.0.1.0.0.0.1

%e .1.0.0.0.1.0.0.0.1

%e .0.0.0.0.1.0.0.0.0

%e .0.0.1.1.1.1.1.0.0

%K nonn

%O 1,9

%A _R. H. Hardin_