OFFSET
0,2
LINKS
Andrew Howroyd, Table of n, a(n) for n = 0..500
FORMULA
a(n) = [x^(n^2)] theta_3(x)^9/(1 - x), where theta_3() is the Jacobi theta function. - Ilya Gutkovskiy, Apr 14 2018
CROSSREFS
KEYWORD
nonn
AUTHOR
STATUS
approved