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%I A146268 #4 Mar 31 2012 12:35:09
%S A146268 1,1,1,1,1,1,2,5,10,17,30,77,254,873,2865,9282,36476,176379,950600,
%T A146268 5334620,30998066,200015663,1516056134,12927161092,120013319909,
%U A146268 1186872290095,12868902178120,156796551881590
%N A146268 Number of n X n binary arrays symmetric about both diagonal and antidiagonal with all ones connected only in a 110-111-110 pattern in any orientation.
%e A146268 Maximal 8 X 8 example
%e A146268 .0.0.0.1.1.1.0.0
%e A146268 .0.0.0.1.1.1.0.0
%e A146268 .0.0.0.0.1.0.1.1
%e A146268 .1.1.0.0.0.1.1.1
%e A146268 .1.1.1.0.0.0.1.1
%e A146268 .1.1.0.1.0.0.0.0
%e A146268 .0.0.1.1.1.0.0.0
%e A146268 .0.0.1.1.1.0.0.0
%K A146268 nonn
%O A146268 1,7
%A A146268 _R. H. Hardin_

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