OFFSET
0,2
LINKS
Vincenzo Librandi, Table of n, a(n) for n = 0..200
Borcherds, Richard E., Automorphic forms with singularities on Grassmannians, Invent. Math. 132 (1998), 491-562.
MATHEMATICA
max = 30; QP = QPochhammer; s = QP[q]^8/QP[q^2]^16 + O[q]^(2max+1); Table[ SeriesCoefficient[s, 2 n], {n, 0, max}] (* Jean-François Alcover, Nov 25 2015 *)
PROG
(PARI) {a(n)=local(A); if(n<0, 0, n*=2; A=x*O(x^n); polcoeff( eta(x+A)^8/eta(x^2+A)^16, n))} /* Michael Somos, Apr 09 2005 */
CROSSREFS
KEYWORD
nonn,easy
AUTHOR
N. J. A. Sloane, Apr 07 2005
EXTENSIONS
More terms from Michael Somos, Apr 07 2005
STATUS
approved