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%I A146269 #4 Mar 31 2012 12:35:09
%S A146269 1,1,1,1,1,1,2,1,4,1,8,3,26,9,95,20,374,59,1990,238,12488,1339,98678,
%T A146269 8950,945523,63227,10649014,541368,148952527
%N A146269 Number of n X n binary arrays symmetric about the diagonal and under 90 degree rotation with all ones connected only in a 110-111-110 pattern in any orientation.
%e A146269 Maximal 9 X 9 example
%e A146269 .0.0.0.0.1.0.0.0.0
%e A146269 .0.0.0.1.1.1.0.0.0
%e A146269 .0.0.0.1.1.1.0.0.0
%e A146269 .0.1.1.0.0.0.1.1.0
%e A146269 .1.1.1.0.0.0.1.1.1
%e A146269 .0.1.1.0.0.0.1.1.0
%e A146269 .0.0.0.1.1.1.0.0.0
%e A146269 .0.0.0.1.1.1.0.0.0
%e A146269 .0.0.0.0.1.0.0.0.0
%K A146269 nonn
%O A146269 1,7
%A A146269 _R. H. Hardin_

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