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A147065 Number of n X n binary arrays symmetric under 90 degree rotation with all ones connected only in a 01010-11111 pattern in any orientation. 0

%I

%S 1,1,1,1,1,1,4,7,20,27,84,153,692,1605,7549,19036,103045,315223,

%T 2201412,8341738,68161042,299153867,2851751081,14915115066

%N Number of n X n binary arrays symmetric under 90 degree rotation with all ones connected only in a 01010-11111 pattern in any orientation.

%e Maximal 8 X 8 example

%e .0.1.0.0.1.0.1.0

%e .1.1.0.1.1.1.1.1

%e .0.1.0.0.0.0.0.0

%e .1.1.0.0.0.0.1.0

%e .0.1.0.0.0.0.1.1

%e .0.0.0.0.0.0.1.0

%e .1.1.1.1.1.0.1.1

%e .0.1.0.1.0.0.1.0

%K nonn

%O 1,7

%A _R. H. Hardin_, Nov 04 2008

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Last modified May 21 11:28 EDT 2022. Contains 353908 sequences. (Running on oeis4.)