%I A005134 M0219
%S A005134 1,1,1,1,1,1,1,1,2,2,2,2,3,3,4,5,8,9,13,16,28,40,68,117,297,665
%N A005134 Number of n-dimensional unimodular lattice (or quadratic forms).
%D A005134 J. H. Conway and N. J. A. Sloane, "Sphere Packings, Lattices and Groups", 
               Springer-Verlag, p. 49.
%D A005134 N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, 
               Academic Press, 1995 (includes this sequence).
%Y A005134 Cf. A054907-A054909, A054911.
%Y A005134 Sequence in context: A029083 A153683 A005139 this_sequence A081651 A029193 
               A005858
%Y A005134 Adjacent sequences: A005131 A005132 A005133 this_sequence A005135 A005136 
               A005137
%K A005134 nonn,nice,hard
%O A005134 0,9
%A A005134 N. J. A. Sloane (njas(AT)research.att.com).