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A028925
Maximal number of pairs of minimal vectors in an n-dimensional lattice.
0
0, 1, 3, 6, 12, 20, 36, 63, 120, 136
OFFSET
0,3
REFERENCES
J. H. Conway and N. J. A. Sloane, "Sphere Packings, Lattices and Groups", Springer-Verlag, p. 15.
CROSSREFS
A001116 / 2.
Sequence in context: A079983 A028926 A038577 * A028924 A034738 A054064
KEYWORD
nonn,hard,more
AUTHOR
STATUS
approved