0,3

J. H. Conway and N. J. A. Sloane, "Sphere Packings, Lattices and Groups", Springer-Verlag, p. 161.

1+432*q^4+1824*q^6+...

Sequence in context: A066419 A069781 A006910 this_sequence A109123 A113921 A047804

Adjacent sequences: A015226 A015227 A015228 this_sequence A015230 A015231 A015232

nonn

N. J. A. Sloane (njas(AT)research.att.com).