%I M0402 #15 Dec 17 2021 11:27:25
%S 0,0,0,1,0,0,1,1,0,1,0,1,1,0,0,1,1,1,2,3,1,2,1,3,2,1,2,5,1,1,3,5,2,3,
%T 1,5,5,2,2,6,2,2,5,6,3,3,3,8,4,3
%N Number of indecomposable positive definite ternary quadratic forms of determinant n.
%D J. H. Conway and N. J. A. Sloane, "Sphere Packings, Lattices and Groups", Springer-Verlag, p. 398.
%D N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).
%H A. Schiemann, <a href="http://www.math.rwth-aachen.de/~Gabriele.Nebe/LATTICES/index.html#cryst">Brandt-Intrau tables recomputed</a>
%Y Cf. A006377, A071136.
%K nonn,nice,more
%O 1,19
%A _N. J. A. Sloane_
|