%I A153918
%S A153918 1,2,3,6,8,13,27,79,206,623,1643,6478,21771,102958,407720,2191304,
%T A153918 10858499,72602092,437224300,3520328145,25109099300,244666233084,
%U A153918 2097356566526,24692650522065,255493996817129,3611171350858856
%N A153918 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 5 X 5 X 5 subtriangle.
%Y A153918 Sequence in context: A024788 A004101 A003405 this_sequence A114319 A089426 
               A066739
%Y A153918 Adjacent sequences: A153915 A153916 A153917 this_sequence A153919 A153920 
               A153921
%K A153918 nonn
%O A153918 0,2
%A A153918 Ron Hardin (rhhardin(AT)att.net) Jan 03 2009