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A146601 Number of n X n binary arrays symmetric under 180 degree rotation with all ones connected only in a 1000-1000-1111 pattern in any orientation. 0

%I

%S 1,1,1,1,9,17,69,301,1753,10173,84391,728377,10351543,132350331,

%T 2998203817

%N Number of n X n binary arrays symmetric under 180 degree rotation with all ones connected only in a 1000-1000-1111 pattern in any orientation.

%e Maximal 8 X 8 example

%e .0.0.0.0.0.0.0.1

%e .1.0.0.0.0.0.0.1

%e .1.0.0.0.1.1.1.1

%e .1.1.1.1.0.0.0.0

%e .0.0.0.0.1.1.1.1

%e .1.1.1.1.0.0.0.1

%e .1.0.0.0.0.0.0.1

%e .1.0.0.0.0.0.0.0

%K nonn

%O 1,5

%A _R. H. Hardin_, Nov 04 2008

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Last modified March 21 22:04 EDT 2023. Contains 361411 sequences. (Running on oeis4.)