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A146704 Number of n X n binary arrays symmetric under 90 degree rotation with all ones connected only in a 1100-1111-0010 pattern in any orientation. 0

%I

%S 1,1,1,1,1,1,3,19,43,75,183,643,2215,9883,45633,225733,1239851,

%T 7715029,52987121,415234347,3530586371,34390495263

%N Number of n X n binary arrays symmetric under 90 degree rotation with all ones connected only in a 1100-1111-0010 pattern in any orientation.

%e Maximal 8 X 8 example

%e .0.1.0.0.0.0.1.0

%e .1.1.0.0.1.1.1.1

%e .0.1.1.0.1.1.0.0

%e .0.1.1.0.0.0.0.0

%e .0.0.0.0.0.1.1.0

%e .0.0.1.1.0.1.1.0

%e .1.1.1.1.0.0.1.1

%e .0.1.0.0.0.0.1.0

%K nonn

%O 1,7

%A _R. H. Hardin_, Nov 04 2008

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Last modified October 25 10:46 EDT 2021. Contains 348239 sequences. (Running on oeis4.)