%I A146172
%S A146172 1,1,1,1,1,1,117,259,1991,4759,52453,136907,6546215,22604681,6955049615,
%T A146172 33225401665,5312086374693,30690294218759,6137053540967147,
%U A146172 42562920511505493,35203573251917171119,310505729227048458909
%N A146172 Number of n X n binary arrays symmetric under horizontal reflection with 
               all ones connected only in a 110-100-111 pattern in any orientation.
%e A146172 Maximal 8 X 8 example
%e A146172 .0.0.0.0.0.0.0.0
%e A146172 .1.1.0.0.0.0.1.1
%e A146172 .1.0.0.0.0.0.0.1
%e A146172 .1.1.1.0.0.1.1.1
%e A146172 .0.0.0.0.0.0.0.0
%e A146172 .0.0.1.0.0.1.0.0
%e A146172 .1.0.1.0.0.1.0.1
%e A146172 .1.1.1.0.0.1.1.1
%Y A146172 Sequence in context: A064180 A050245 A031174 this_sequence A146189 A063332 
               A063338
%Y A146172 Adjacent sequences: A146169 A146170 A146171 this_sequence A146173 A146174 
               A146175
%K A146172 nonn
%O A146172 1,7
%A A146172 Ron Hardin (rhhardin(AT)att.net), Oct 27 2008