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A146222 Number of n X n binary arrays symmetric under 90 degree rotation with all ones connected only in a 101-111-010 pattern in any orientation. 0

%I

%S 1,1,1,1,1,1,8,19,32,59,168,529,2001,7331,32274,148084,749186,4153139,

%T 26410348,177997054,1409667475,11785334777,115210607000,1184859282420,

%U 13940662127003

%N Number of n X n binary arrays symmetric under 90 degree rotation with all ones connected only in a 101-111-010 pattern in any orientation.

%e Maximal 8 X 8 example

%e .0.0.0.0.1.0.1.0

%e .1.1.0.0.1.1.1.0

%e .0.1.1.0.0.1.0.0

%e .1.1.0.0.0.0.0.0

%e .0.0.0.0.0.0.1.1

%e .0.0.1.0.0.1.1.0

%e .0.1.1.1.0.0.1.1

%e .0.1.0.1.0.0.0.0

%K nonn

%O 1,7

%A _R. H. Hardin_

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Last modified May 28 09:09 EDT 2022. Contains 354112 sequences. (Running on oeis4.)