%I
%S 1,0,2,0,4,6,10,6,12,6,6,8,10,8,10,22
%N Representation numbers (or theta series) for either one of Schiemann's pair of fourdimensional positive definite quadratic forms with the same representation numbers.
%C a(n) is the number of ways either form represents 2n.
%D J. H. Conway and N. J. A. Sloane, "Sphere Packings, Lattices and Groups", SpringerVerlag, Third edition, p. xxix.
%D Earnest, A. G., and G. Nipp. "On the theta series of positive quaternary quadratic forms." CR Math. Rep. Acad. Sci. Canada 13 (1991): 3338. See p. 36.
%D Schiemann, Alexander. "Ein Beispiel positiv definiter quadratischer Formen der Dimension 4 mit gleichen Darstellungszahlen." Archiv der Mathematik, 54.4 (1990): 372375.
%H J. H. Conway and N. J. A. Sloane, <a href="http://NeilSloane.com/doc/nipp.pdf">FourDimensional Lattices With the Same Theta Series</a>, Duke Math. J., 66 (International Mathematics Research Notices Number 4) (1992), pp. 9396. (Pages are in reverse order)
%K nonn,more
%O 0,3
%A _N. J. A. Sloane_, Aug 26 2018
