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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 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,3

REFERENCES

J. H. Conway and N. J. A. Sloane, "Sphere Packings, Lattices and Groups", Springer-Verlag, p. 15.

LINKS

Table of n, a(n) for n=0..9.

CROSSREFS

A001116 / 2.

Sequence in context: A079983 A028926 A038577 * A028924 A034738 A054064

Adjacent sequences:  A028922 A028923 A028924 * A028926 A028927 A028928

KEYWORD

nonn,hard,more

AUTHOR

N. J. A. Sloane.

STATUS

approved

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Last modified August 15 01:56 EDT 2020. Contains 336485 sequences. (Running on oeis4.)