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A036983 Number of invariants in Hilbert basis for binary forms of degree n. 5
0, 1, 1, 2, 4, 5, 30, 9 (list; graph; refs; listen; history; text; internal format)
OFFSET

2,4

COMMENTS

Extending this is related to a "gorgeous open question of great antiquity" [Towber]

REFERENCES

Roe Goodman and Nolan R. Wallach, Representations and invariants of the classical groups, Cambridge Univ. Press, Cambridge, 1998

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

LINKS

Table of n, a(n) for n=2..9.

Roe Goodman and Nolan R. Wallach, Representations and invariants of the classical groups, Bull. Amer. Math. Soc., 36 (1999), Number 4, Pages 533-538.

J. Towber, Review of "Representations and Invariants of the Classical Groups" by Roe Goodman and Nolan R. Wallach, Bull. Amer. Math. Soc., 36 (1999), 533-538.

CROSSREFS

Cf. A036984.

Sequence in context: A036985 A179133 A199929 * A126666 A154775 A210418

Adjacent sequences:  A036980 A036981 A036982 * A036984 A036985 A036986

KEYWORD

nonn,nice,hard,more

AUTHOR

N. J. A. Sloane.

STATUS

approved

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Last modified December 20 02:13 EST 2014. Contains 252240 sequences.