OFFSET
0,5
COMMENTS
Poincare series for invariant polynomial functions on the space of binary forms of degree 8.
LINKS
Andries Brouwer, Poincaré Series (See n=8).
J.-I. Igusa, Modular forms and projective invariants, Amer. J. Math., 89 (1967), 817-855; see p. 847.
Peter Littelmann and Claudio Procesi, On the Poincaré series of the invariants of binary forms, Journal of Algebra 133.2 (1990): 490-499. See last page.
Index entries for linear recurrences with constant coefficients, signature (-1,1,3,3,0,-3,-4,-3,-1,1,2,3,3,2,1,-1,-3,-4,-3,0,3,3,1,-1,-1).
PROG
(PARI) Vec((1+x^8+x^9+x^10+x^18)/((1-x^2)*(1-x^3)*(1-x^4)*(1-x^5)*(1-x^6)*(1-x^7)) + O(x^50)) \\ Jinyuan Wang, Mar 10 2020
CROSSREFS
KEYWORD
nonn,easy
AUTHOR
N. J. A. Sloane, Sep 01 2004
STATUS
approved