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A146705 Number of n X n binary arrays symmetric under 180 degree rotation with all ones connected only in a 1100-1111-0010 pattern in any orientation. 0

%I

%S 1,1,1,1,1,21,47,269,1463,8149,63091,761263,8894963,159626291,

%T 3010312887,80637272407

%N Number of n X n binary arrays symmetric under 180 degree rotation with all ones connected only in a 1100-1111-0010 pattern in any orientation.

%e Maximal 8 X 8 example

%e .0.0.0.0.0.1.1.0

%e .0.0.0.1.1.1.1.0

%e .1.1.0.0.1.0.0.0

%e .1.1.1.1.0.1.0.0

%e .0.0.1.0.1.1.1.1

%e .0.0.0.1.0.0.1.1

%e .0.1.1.1.1.0.0.0

%e .0.1.1.0.0.0.0.0

%K nonn

%O 1,6

%A _R. H. Hardin_, Nov 04 2008

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Last modified October 18 01:39 EDT 2021. Contains 348065 sequences. (Running on oeis4.)