363384domain: NAppears in sequencesNumber of labeled trees of diameter 4 with n nodes.at n=4A000555Triangle giving number of labeled trees with n >= 3 nodes and diameter d >= 2.at n=23A034854Expansion of e.g.f. 1/(1 - x^3 * (exp(x) - 1)).at n=9A358014Expansion of e.g.f. -log(1 - x^3 * exp(x)).at n=9A366546