%I A147028
%S A147028 1,1,1,1,1,1,1,1,177,345,2505,5729,75825,187849,6215801,19558129,
%T A147028 3054260057,12287993577,1988214768097,9763619895845,2194779047865427,
%U A147028 13072631855408245
%N A147028 Number of n X n binary arrays symmetric under horizontal reflection with 
               all ones connected only in a 0100-0100-1111-0010 pattern in any orientation.
%e A147028 Maximal 9 X 9 example
%e A147028 .0.1.0.0.0.0.0.1.0
%e A147028 .1.1.1.1.0.1.1.1.1
%e A147028 .0.0.1.0.0.0.1.0.0
%e A147028 .0.0.1.0.0.0.1.0.0
%e A147028 .0.0.0.0.0.0.0.0.0
%e A147028 .0.0.1.0.0.0.1.0.0
%e A147028 .0.0.1.0.0.0.1.0.0
%e A147028 .1.1.1.1.0.1.1.1.1
%e A147028 .0.1.0.0.0.0.0.1.0
%Y A147028 Sequence in context: A046189 A164843 A077786 this_sequence A105988 A083620 
               A097317
%Y A147028 Adjacent sequences: A147025 A147026 A147027 this_sequence A147029 A147030 
               A147031
%K A147028 nonn
%O A147028 1,9
%A A147028 Ron Hardin (rhhardin(AT)att.net), Nov 04 2008