84663domain: NAppears in sequencesNumber of points in Z^9 of norm <= n.at n=3A055415Number of points in Z^n of norm <= 3.at n=9A055427a(n) = [x^n] theta_3(x)^n/(1 - x), where theta_3() is the Jacobi theta function.at n=9A302860Number of integer solutions to (x_1)^2 + (x_2)^2 + ... + (x_9)^2 <= n.at n=9A341398