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J. H. Conway and N. J. A. Sloane, "Sphere Packings, Lattices and Groups", Springer-Verlag, p. 113, 116.
Table of n, a(n) for n=0..51.
Index entries for sequences related to b.c.c. lattice
Index entries for sequences related to f.c.c. lattice
Sequence in context: A176823 A316199 A300905 * A107779 A018874 A163900
Adjacent sequences: A008661 A008662 A008663 * A008665 A008666 A008667
N. J. A. Sloane.