A006377 Determinants of indecomposable indefinite ternary quadratic forms. (Formerly M4501)

8, 28, 32, 56, 64, 68, 72, 92

Offset

1,1

References

J. H. Conway and N. J. A. Sloane, "Sphere Packings, Lattices and Groups", Springer-Verlag, p. 399.

N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).

Links

Table of n, a(n) for n=1..8.

A. Schiemann, Brandt-Intrau tables recomputed

Crossrefs

Cf. A006377, A071136.

Sequence in context: A201101 A201105 A184614 * A319233 A323198 A121739

Adjacent sequences: A006374 A006375 A006376 * A006378 A006379 A006380

Keyword

nonn,nice

Author

N. J. A. Sloane

Status

approved