0,2
J. H. Conway and N. J. A. Sloane, "Sphere Packings, Lattices and Groups", Springer-Verlag, p 102 eq 9.
Sequence in context: A060779 A029594 A033712 this_sequence A033754 A063944 A086447
Adjacent sequences: A033727 A033728 A033729 this_sequence A033731 A033732 A033733
nonn
N. J. A. Sloane (njas(AT)research.att.com).
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