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A147276 Number of n X n binary arrays symmetric under horizontal reflection with all ones connected only in a 1000-1100-0111-0001 pattern in any orientation. 0

%I #4 Mar 31 2012 12:35:16

%S 1,1,1,1,1,1,1,1,225,445,5061,12325,159173,439491,12030763,38257835,

%T 4443537629,17894441301,5108288425395,26137633294785,7314126561550685

%N Number of n X n binary arrays symmetric under horizontal reflection with all ones connected only in a 1000-1100-0111-0001 pattern in any orientation.

%e Maximal 9 X 9 example

%e .0.0.0.1.0.1.0.0.0

%e .0.1.1.1.0.1.1.1.0

%e .1.1.0.0.0.0.0.1.1

%e .1.0.0.0.0.0.0.0.1

%e .0.0.0.0.0.0.0.0.0

%e .1.0.0.0.0.0.0.0.1

%e .1.1.1.0.0.0.1.1.1

%e .0.0.1.1.0.1.1.0.0

%e .0.0.0.1.0.1.0.0.0

%K nonn

%O 1,9

%A _R. H. Hardin_, Nov 04 2008

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Last modified April 23 08:14 EDT 2024. Contains 371905 sequences. (Running on oeis4.)