%I A146243
%S A146243 1,1,3,5,11,29,171,783,4399,33371,348951,4490023,67743969,1262306965,
%T A146243 30412318737,938946971693,36229300537639,1709400162886171,
%U A146243 100764547585566691,7519118775918147695,708647258526428184031
%N A146243 Number of n X n binary arrays symmetric about main diagonal with all 
               ones connected only in a 110-111-010 pattern in any orientation.
%e A146243 Maximal 8 X 8 example
%e A146243 .0.1.0.0.0.0.1.0
%e A146243 .1.1.1.0.0.1.1.1
%e A146243 .0.1.1.0.0.0.1.1
%e A146243 .0.0.0.1.1.0.0.0
%e A146243 .0.0.0.1.1.1.0.0
%e A146243 .0.1.0.0.1.0.1.0
%e A146243 .1.1.1.0.0.1.1.1
%e A146243 .0.1.1.0.0.0.1.1
%Y A146243 Sequence in context: A000101 A037152 A084748 this_sequence A108259 A093933 
               A165572
%Y A146243 Adjacent sequences: A146240 A146241 A146242 this_sequence A146244 A146245 
               A146246
%K A146243 nonn
%O A146243 1,3
%A A146243 Ron Hardin (rhhardin(AT)att.net)