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A146656 Number of n X n binary arrays symmetric under 90 degree rotation with all ones connected only in a 1100-0100-1111 pattern in any orientation. 0

%I #4 Mar 31 2012 12:35:11

%S 1,1,1,1,1,1,1,15,35,63,141,389,1325,3883,15377,77717,402273,2247249,

%T 12314001,75093365,525963699

%N Number of n X n binary arrays symmetric under 90 degree rotation with all ones connected only in a 1100-0100-1111 pattern in any orientation.

%e Maximal 8 X 8 example

%e .1.1.0.0.0.1.0.1

%e .0.1.0.0.0.1.1.1

%e .1.1.1.1.0.1.0.0

%e .0.0.0.0.0.1.0.0

%e .0.0.1.0.0.0.0.0

%e .0.0.1.0.1.1.1.1

%e .1.1.1.0.0.0.1.0

%e .1.0.1.0.0.0.1.1

%K nonn

%O 1,8

%A _R. H. Hardin_, Nov 04 2008

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Last modified July 3 15:31 EDT 2024. Contains 373982 sequences. (Running on oeis4.)