37044000domain: NAppears in sequencesCoreful 4-abundant numbers: numbers k such that csigma(k) > 4*k, where csigma(k) is the sum of the coreful divisors of k (A057723).at n=9A340110Expansion of e.g.f. 1 / (1 + 3 * x * log(1 - x))^(2/3).at n=9A375689