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%I A146177 #4 Mar 31 2012 12:35:09
%S A146177 1,1,1,1,1,1,13,33,61,115,431,1359,5125,23279,156491,866819,5189807,
%T A146177 30665629,248556857,1970821419,20754531695,214278299237
%N A146177 Number of n X n binary arrays symmetric under 90 degree rotation with all ones connected only in a 110-100-111 pattern in any orientation.
%e A146177 Maximal 8 X 8 example
%e A146177 .0.0.0.0.0.0.1.0
%e A146177 .1.1.1.0.1.0.1.0
%e A146177 .0.0.1.0.1.1.1.0
%e A146177 .0.1.1.0.0.0.0.0
%e A146177 .0.0.0.0.0.1.1.0
%e A146177 .0.1.1.1.0.1.0.0
%e A146177 .0.1.0.1.0.1.1.1
%e A146177 .0.1.0.0.0.0.0.0
%K A146177 nonn
%O A146177 1,7
%A A146177 _R. H. Hardin_, Oct 27 2008

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