A028925 - OEIS

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A028925

Maximal number of pairs of minimal vectors in an n-dimensional lattice.

0, 1, 3, 6, 12, 20, 36, 63, 120, 136 (list; graph; refs; listen; history; internal format)

	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` `Adjacent sequences: A028922 A028923 A028924 * A028926 A028927 A028928`
	KEYWORD	`nonn,hard`
	AUTHOR	`N. J. A. Sloane (njas(AT)research.att.com).`

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Last modified February 17 21:13 EST 2012. Contains 206085 sequences.