“…More generally, N n=1 d k (n) can be asymptotically expressed as N times a polynomial of degree k − 1 in ln(N), which in turn can be described as the residue at z = 1 of z −1 ζ(z) k N z . See [169] for an application of {γ j } ∞ j=0 to asymptotic series for E n (ω) and E n (Ω), [361] for a generalization, and [362,363,364,365,366,367,368] for connections to the Riemann hypothesis. 2.22.…”