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A147207 Number of n X n binary arrays symmetric under 90 degree rotation with all ones connected only in a 1100-0101-0111 pattern in any orientation. 0

%I #4 Mar 31 2012 12:35:15

%S 1,1,1,1,1,1,1,13,37,65,115,397,1335,4065,16853,83455,458373,2464107,

%T 13365801,84069939,594053347

%N Number of n X n binary arrays symmetric under 90 degree rotation with all ones connected only in a 1100-0101-0111 pattern in any orientation.

%e Maximal 8 X 8 example

%e .0.0.0.1.1.0.0.0

%e .0.1.0.1.0.1.1.0

%e .0.1.1.1.0.1.0.0

%e .1.0.0.0.0.1.1.1

%e .1.1.1.0.0.0.0.1

%e .0.0.1.0.1.1.1.0

%e .0.1.1.0.1.0.1.0

%e .0.0.0.1.1.0.0.0

%K nonn

%O 1,8

%A _R. H. Hardin_, Nov 04 2008

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Last modified March 28 04:13 EDT 2024. Contains 371235 sequences. (Running on oeis4.)