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A146916 Number of n X n binary arrays symmetric under 180 degree rotation with all ones connected only in a 0100-1110-0111-0010 pattern in any orientation. 0

%I

%S 1,1,1,3,1,5,9,25,65,311,777,5163,19629,179101,938309,11522939,

%T 83049733,1385281995,13583413581,310426685067,4145583315227,

%U 129859229238145

%N Number of n X n binary arrays symmetric under 180 degree rotation with all ones connected only in a 0100-1110-0111-0010 pattern in any orientation.

%e Maximal 8 X 8 example

%e .0.0.1.0.0.0.1.0

%e .0.1.1.1.0.1.1.1

%e .1.1.1.0.1.1.1.0

%e .0.1.0.0.0.1.0.0

%e .0.0.1.0.0.0.1.0

%e .0.1.1.1.0.1.1.1

%e .1.1.1.0.1.1.1.0

%e .0.1.0.0.0.1.0.0

%K nonn

%O 1,4

%A _R. H. Hardin_, Nov 04 2008

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Last modified April 7 11:07 EDT 2020. Contains 333301 sequences. (Running on oeis4.)