A036984 Number of covariants in Hilbert basis for binary forms of degree n.

2, 4, 5, 23, 26, 147, 69, 476, 510

Offset

2,1

References

P. J. Olver, Classical Invariant Theory, Cambridge Univ. Press, p. 40.

Links

Table of n, a(n) for n=2..10.

Leonid Bedratyuk, On complete system of covariants for the binary form of degree 8, arXiv:math/0612113 [math.AG], 2006.

Leonid Bedratyuk, A complete minimal system of covariants for the binary form of degree 7, J. Symb. Comp. 44, No. 2, 211-220, 2009.

Leonid Bedratyuk and S. L. Bedratyuk, A complete system of covariants for the binary form of the eighth degree, Mathematical Bulletin of the Shevchenko Scientific Society, 5, 11-22, 2008 [in Ukrainian]. Also sometimes referenced as "A complete minimal system of covariants for the binary form of degree 8".

Reynald Lercier and Marc Olive, Covariant algebra of the binary nonic and the binary decimic, in: Arithmetic, Geometry, Cryptography and Coding Theory, AMS, 2017; arXiv:1509.08749 [math.AG], 2015.

Crossrefs

Cf. A036983.

Sequence in context: A036986 A144420 A126667 * A163891 A036985 A179133

Adjacent sequences: A036981 A036982 A036983 * A036985 A036986 A036987

Keyword

nonn,nice,more

Author

N. J. A. Sloane

Extensions

Corrected and extended by Leonid Bedratyuk, Aug 24 2010

a(9)-a(10) from Lercier & Olive added by Andrey Zabolotskiy, Nov 04 2023

Status

approved