1009680

Appears in sequences

• Number of labeled mating digraphs with n nodes.at n=5A006025
• Number of 5-cycles in the n X n black bishop graph.at n=18A289163
• Expansion of e.g.f. 1 / (exp(-x^2) - x).at n=8A375604
• Expansion of e.g.f. (1+x) * exp(x^2*(1+x)^3).at n=8A387970