-13472domain: ZAppears in sequencesa(n) = n^3-((n-1)^3+(n-2)^3+(n-3)^3).at n=21A147974Expansion of f(-x, -x^5)^3 / (f(x, x^5) * f(-x^2, -x^2)^2) in powers of x where f(, ) is Ramanujan's general theta function.at n=15A260057