%I A153912
%S A153912 1,2,28586,195384,2093119,20428045,317866834,4492197059,100898111116,
%T A153912 2073132268053,67489432729042,2005814360075163,94662265499676795,
%U A153912 4075394325398277635,278524123602639198495,17377022786797473216927
%N A153912 Number of planar n X n X n binary triangular grids with mirror symmetry 
               about one altitude with no more than 2 ones in any 3 X 3 X 3 subtriangle.
%Y A153912 Sequence in context: A132942 A131558 A133857 this_sequence A047076 A030462 
               A001377
%Y A153912 Adjacent sequences: A153909 A153910 A153911 this_sequence A153913 A153914 
               A153915
%K A153912 nonn
%O A153912 0,2
%A A153912 Ron Hardin (rhhardin(AT)att.net) Jan 03 2009