0,3
J. H. Conway and N. J. A. Sloane, "Sphere Packings, Lattices and Groups", Springer-Verlag, p. 120.
Sequence in context: A167264 A013556 A013557 this_sequence A156645 A037935 A159824
Adjacent sequences: A022068 A022069 A022070 this_sequence A022072 A022073 A022074
nonn
N. J. A. Sloane (njas(AT)research.att.com).
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