%I A066454
%S A066454 0,0,1,4,10,34,71,246,522,1783,3765,12858,27496
%N A066454 Number of 3-dimensional polyominoes (or polycubes) with n cells and symmetry 
               group of order exactly 2.
%Y A066454 Cf. A000162, A066453.
%Y A066454 Sequence in context: A149171 A149172 A105680 this_sequence A022445 A091003 
               A140725
%Y A066454 Adjacent sequences: A066451 A066452 A066453 this_sequence A066455 A066456 
               A066457
%K A066454 nonn
%O A066454 1,4
%A A066454 Brendan Owen (brendan_owen(AT)yahoo.com), Dec 27 2001