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A147010 Number of n X n binary arrays symmetric under 180 degree rotation with all ones connected only in a 00100-11111-00100 pattern in any orientation. 0

%I

%S 1,1,1,1,3,5,9,19,56,167,758,2457,14728,66625,526225,3298653,34425031,

%T 276512141,3848586911,41626261490

%N Number of n X n binary arrays symmetric under 180 degree rotation with all ones connected only in a 00100-11111-00100 pattern in any orientation.

%e Maximal 8 X 8 example

%e .0.1.0.0.0.1.0.0

%e .0.1.0.1.1.1.1.1

%e .1.1.1.0.0.1.0.0

%e .0.1.0.0.0.0.1.0

%e .0.1.0.0.0.0.1.0

%e .0.0.1.0.0.1.1.1

%e .1.1.1.1.1.0.1.0

%e .0.0.1.0.0.0.1.0

%K nonn

%O 1,5

%A _R. H. Hardin_, Nov 04 2008

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Last modified October 5 10:54 EDT 2022. Contains 357255 sequences. (Running on oeis4.)