-3912domain: ZAppears in sequencesExpansion of 1 / (Sum_{n=-oo..oo} x^(n^2))^5.at n=5A004406Expansion of ( f(-q^2) * f(q^3) * f(-q^6) / f(q)^3 )^2 in powers of q where f() is a Ramanujan theta function.at n=7A164271