OFFSET
0,5
LINKS
Ray Chandler, Table of n, a(n) for n = 0..2000
Ray Chandler, Mathematica program
G. Nebe, E. M. Rains and N. J. A. Sloane, Self-Dual Codes and Invariant Theory, Springer, Berlin, 2006.
M. Oura, The dimension formula for the ring of code polynomials in genus 4, Osaka J. Math. 34 (1997), 53-72.
M. Oura, The dimension formula of the invariant ring of H5 (web archive).
FORMULA
Oura (see link) gives the Molien series explicitly.
EXAMPLE
1 + x^8 + 2*x^16 + 2*x^20 + 8*x^24 + 8*x^28 + 34*x^32 + 60*x^36 + 203*x^40 + 553*x^44 + 2063*x^48 + 7359*x^52 + 30811*x^56 + 127416*x^60 + 541644*x^64 + 2235677*x^68 + 8966371*x^72 + 34413747*x^76 + 126465849*x^80 + 443858877*x^84 + 1490702752*x^88 + 4796609651*x^92 + 14821521743*x^96 + .....
MATHEMATICA
See link for Mathematica program.
CROSSREFS
KEYWORD
nonn
AUTHOR
N. J. A. Sloane, Dec 22 2008, following a suggestion from G. Nebe.
EXTENSIONS
More terms from Ray Chandler, Mar 23 2017
STATUS
approved