A028926 - OEIS

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A028926

Number of pairs of minimal vectors in n-dimensional lattice Kappa_n.

0, 1, 3, 6, 12, 20, 36, 46, 66, 90, 138, 216, 378, 459, 616, 873, 1645, 2133 (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. 161.`
	CROSSREFS	`A028923 / 2.` `Sequence in context: A182978 A006128 A079983 * A038577 A028925 A028924` `Adjacent sequences: A028923 A028924 A028925 * A028927 A028928 A028929`
	KEYWORD	`nonn`
	AUTHOR	`N. J. A. Sloane (njas(AT)research.att.com).`

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Last modified February 14 21:50 EST 2012. Contains 205663 sequences.