368064domain: NAppears in sequencesa(n) = p(p+1)^2, where p is the n-th prime.at n=19A178398Molecular topological indices of the complete bipartite graphs K_{n,n}.at n=35A192418Dirichlet g.f.: Product_{k>=2} 1 / (1 - k^(-s))^(k^4).at n=17A343284