%I A054908
%S A054908 0,0,0,0,0,0,0,0,0,0,0,0,1,0,1,1,1,1,4,3,12,12,28,49,156,368
%N A054908 Number of n-dimensional odd unimodular lattice (or quadratic forms) containing 
               no vectors of norm 1.
%D A054908 J. H. Conway and N. J. A. Sloane, "Sphere Packings, Lattices and Groups", 
               Springer-Verlag, p. 49.
%Y A054908 Cf. A005134, A054907-A054909, A054911.
%Y A054908 Sequence in context: A166552 A122804 A122544 this_sequence A141826 A120340 
               A082018
%Y A054908 Adjacent sequences: A054905 A054906 A054907 this_sequence A054909 A054910 
               A054911
%K A054908 nonn,nice,hard
%O A054908 0,19
%A A054908 N. J. A. Sloane (njas(AT)research.att.com), May 23 2000