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A146581 Number of n X n binary arrays symmetric about main diagonal with all ones connected only in a 0100-1100-0111 pattern in any orientation. 0

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

%S 1,1,1,1,3,11,31,107,597,4235,35993,378513,5151733,87563339,

%T 1913743005,52850470565,1858867426265,81756583423405,4581414733191763,

%U 324047679491641949,29188263592896961077

%N Number of n X n binary arrays symmetric about main diagonal with all ones connected only in a 0100-1100-0111 pattern in any orientation.

%e Maximal 8 X 8 example

%e .0.0.0.1.1.1.0.0

%e .0.0.1.1.0.0.0.0

%e .0.1.0.1.0.0.0.0

%e .1.1.1.0.0.0.1.0

%e .1.0.0.0.0.1.1.1

%e .1.0.0.0.1.0.0.1

%e .0.0.0.1.1.0.0.1

%e .0.0.0.0.1.1.1.0

%K nonn

%O 1,5

%A _R. H. Hardin_, Nov 04 2008

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Last modified September 1 03:33 EDT 2024. Contains 375575 sequences. (Running on oeis4.)