0,2
J. H. Conway and N. J. A. Sloane, "Sphere Packings, Lattices and Groups", Springer-Verlag, p 102 eq 9.
Sequence in context: A126064 A066813 A033732 this_sequence A059886 A085893 A060028
Adjacent sequences: A033749 A033750 A033751 this_sequence A033753 A033754 A033755
nonn
N. J. A. Sloane (njas(AT)research.att.com).
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