A028922 Determinant of n-dimensional lattice Kappa(n) (non-integral beyond the entries shown).

1, 4, 12, 32, 64, 128, 192, 384, 576, 864, 972, 972, 729, 972, 972, 864, 576, 384, 192, 128, 64, 32, 12, 4, 1, 2, 3, 4, 4, 4, 3, 3

Offset

0,2

Comments

The finite sequence "with first half ... 1, 4, 12, 32, 64, 128, 192, 384, 576, 864, 972, 972, 729" is mentioned in Section VI.E, page 1770, of Forney (1994). - N. J. A. Sloane, Mar 28 2019

References

J. H. Conway and N. J. A. Sloane, "Sphere Packings, Lattices and Groups", Springer-Verlag, p. 158.

G. D. Forney, Density/length profiles and trellis complexity of lattices, IEEE Trans. Information Theory, Vol 40, #6, Nov 1994, pp. 1753-1772.

Links

Table of n, a(n) for n=0..31.

Crossrefs

Sequence in context: A152527 A005104 A028921 * A066150 A233458 A335687

Adjacent sequences: A028919 A028920 A028921 * A028923 A028924 A028925

Keyword

nonn

Author

N. J. A. Sloane.

Status

approved