OFFSET
0,3
LINKS
G. Nebe, E. M. Rains and N. J. A. Sloane, Self-Dual Codes and Invariant Theory, Springer, Berlin, 2006.
FORMULA
G.f.: (g(t) + t^59*g(t^-1)) / ((1-t)*(1-t^2)^4*(1-t^4)^6*(1-t^6)^3*(1-t^12)^2) where g(t) = 1 + 16*t^4 + 18*t^5 + 143*t^6 + 170*t^7 + 696*t^8 + 1073*t^9 + 2786*t^10 + 4420*t^11 + 8881*t^12 + 13782*t^13 + 23018*t^14 + 33979*t^15 + 50086*t^16 + 69748*t^17 + 94127*t^18 + 123476*t^19 + 155400*t^20 + 192999*t^21 + 229352*t^22 + 270342*t^23 + 306276*t^24 + 343736*t^25 + 372818*t^26 + 399845*t^27 + 415884*t^28 + 425872*t^29 [Nebe, Rains, Sloane, p. 241]. [Incorrect formula replaced by the correct one by Georg Fischer and Andrey Zabolotskiy, Jan 25 2021]
CROSSREFS
KEYWORD
nonn
AUTHOR
G. Nebe (nebe(AT)math.rwth-aachen.de), Nov 10, 2004
STATUS
approved