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A147028 Number of n X n binary arrays symmetric under horizontal reflection with all ones connected only in a 0100-0100-1111-0010 pattern in any orientation. 0

%I

%S 1,1,1,1,1,1,1,1,177,345,2505,5729,75825,187849,6215801,19558129,

%T 3054260057,12287993577,1988214768097,9763619895845,2194779047865427,

%U 13072631855408245

%N Number of n X n binary arrays symmetric under horizontal reflection with all ones connected only in a 0100-0100-1111-0010 pattern in any orientation.

%e Maximal 9 X 9 example

%e .0.1.0.0.0.0.0.1.0

%e .1.1.1.1.0.1.1.1.1

%e .0.0.1.0.0.0.1.0.0

%e .0.0.1.0.0.0.1.0.0

%e .0.0.0.0.0.0.0.0.0

%e .0.0.1.0.0.0.1.0.0

%e .0.0.1.0.0.0.1.0.0

%e .1.1.1.1.0.1.1.1.1

%e .0.1.0.0.0.0.0.1.0

%K nonn

%O 1,9

%A _R. H. Hardin_, Nov 04 2008

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Last modified January 28 14:26 EST 2022. Contains 350656 sequences. (Running on oeis4.)