|
| |
|
|
A006376
|
|
Number of indecomposable positive definite ternary quadratic forms of determinant n.
(Formerly M0402)
|
|
1
| |
|
|
0, 0, 0, 1, 0, 0, 1, 1, 0, 1, 0, 1, 1, 0, 0, 1, 1, 1, 2, 3, 1, 2, 1, 3, 2, 1, 2, 5, 1, 1, 3, 5, 2, 3, 1, 5, 5, 2, 2, 6, 2, 2, 5, 6, 3, 3, 3, 8, 4, 3
(list; graph; refs; listen; history; internal format)
|
|
|
|
OFFSET
| 1,19
|
|
|
REFERENCES
| J. H. Conway and N. J. A. Sloane, "Sphere Packings, Lattices and Groups", Springer-Verlag, p. 398.
N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).
|
|
|
LINKS
| A. Schiemann, Brandt-Intrau tables recomputed
|
|
|
CROSSREFS
| Cf. A006377, A071136.
Sequence in context: A193926 A073058 A100336 * A005680 A036582 A036848
Adjacent sequences: A006373 A006374 A006375 * A006377 A006378 A006379
|
|
|
KEYWORD
| nonn,nice
|
|
|
AUTHOR
| N. J. A. Sloane (njas(AT)research.att.com).
|
| |
|
|
