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

Offset: 0

Author

N. J. A. Sloane

Keywords

• nonn

References

• J. H. Conway and N. J. A. Sloane, "Sphere Packings, Lattices and Groups", Springer-Verlag, p. 161.

Crossrefs

A028923 / 2.