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A146667 Number of n X n binary arrays symmetric under horizontal reflection with all ones connected only in a 1100-0111-0110 pattern in any orientation. 0

%I

%S 1,1,1,1,1,1,17,31,603,1115,11773,31193,660175,1987061,224682951,

%T 885526067,157313783505,768394153739,158904168376893,960773446522435,

%U 410688920693142221,3062625865459683273

%N Number of n X n binary arrays symmetric under horizontal reflection with all ones connected only in a 1100-0111-0110 pattern in any orientation.

%e Maximal 8 X 8 example

%e .0.1.0.0.0.0.1.0

%e .0.1.1.0.0.1.1.0

%e .1.1.1.0.0.1.1.1

%e .1.0.0.0.0.0.0.1

%e .0.0.1.0.0.1.0.0

%e .1.1.1.0.0.1.1.1

%e .1.1.0.0.0.0.1.1

%e .0.1.0.0.0.0.1.0

%K nonn

%O 1,7

%A _R. H. Hardin_, Nov 04 2008

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Last modified January 16 19:48 EST 2022. Contains 350376 sequences. (Running on oeis4.)