0,2
J. H. Conway and N. J. A. Sloane, "Sphere Packings, Lattices and Groups", Springer-Verlag, p 102 eq 9.
Sequence in context: A099490 A033724 A033748 this_sequence A033760 A136513 A054153
Adjacent sequences: A033733 A033734 A033735 this_sequence A033737 A033738 A033739
nonn
N. J. A. Sloane (njas(AT)research.att.com).
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