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A147511 Number of n X n binary arrays symmetric under 90 degree rotation with all ones connected only in a 11110-01111 pattern in any orientation. 0

%I

%S 1,1,1,1,1,1,1,9,15,29,57,137,413,1389,4485,15371,54209,224739,

%T 1032991,5497929,29140255,171761393,1058704295,7315438183

%N Number of n X n binary arrays symmetric under 90 degree rotation with all ones connected only in a 11110-01111 pattern in any orientation.

%e Maximal 8 X 8 example

%e .1.0.0.0.1.1.1.1

%e .1.1.0.1.1.1.1.0

%e .1.1.0.0.0.0.0.0

%e .1.1.0.0.0.0.1.0

%e .0.1.0.0.0.0.1.1

%e .0.0.0.0.0.0.1.1

%e .0.1.1.1.1.0.1.1

%e .1.1.1.1.0.0.0.1

%K nonn

%O 1,8

%A _R. H. Hardin_

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Last modified July 3 11:18 EDT 2022. Contains 355050 sequences. (Running on oeis4.)