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A146848 Number of n X n binary arrays symmetric under horizontal reflection with all ones connected only in a 1100-1111-0001 pattern in any orientation. 0

%I

%S 1,1,1,1,1,1,17,21,589,1209,14169,35833,752335,2255937,153849079,

%T 571403355,75555523219,350876915239,81358170973501,466475370757593,

%U 166717546455270435,1170203411896641439

%N Number of n X n binary arrays symmetric under horizontal reflection with all ones connected only in a 1100-1111-0001 pattern in any orientation.

%e Maximal 8 X 8 example

%e .0.0.0.0.0.0.0.0

%e .0.0.0.0.0.0.0.0

%e .0.0.0.0.0.0.0.0

%e .0.0.0.0.0.0.0.0

%e .0.1.1.0.0.1.1.0

%e .0.1.0.0.0.0.1.0

%e .1.1.0.0.0.0.1.1

%e .1.1.0.0.0.0.1.1

%K nonn

%O 1,7

%A _R. H. Hardin_, Nov 04 2008

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Last modified November 28 03:21 EST 2021. Contains 349400 sequences. (Running on oeis4.)