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Number of n X n binary arrays symmetric under horizontal reflection with all ones connected only in a 1100-0111-0101 pattern in any orientation.
0

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

%S 1,1,1,1,1,1,17,27,575,1091,10073,26275,436817,1241759,99221321,

%T 359430255,57329770665,261948614931,43007975306403,238557155162155,

%U 61726897724737383

%N Number of n X n binary arrays symmetric under horizontal reflection with all ones connected only in a 1100-0111-0101 pattern in any orientation.

%e Maximal 8 X 8 example

%e .1.1.0.0.0.0.1.1

%e .0.1.0.0.0.0.1.0

%e .1.1.1.0.0.1.1.1

%e .0.0.1.0.0.1.0.0

%e .1.0.0.0.0.0.0.1

%e .1.1.1.0.0.1.1.1

%e .0.1.0.0.0.0.1.0

%e .0.1.1.0.0.1.1.0

%K nonn

%O 1,7

%A _R. H. Hardin_, Nov 04 2008