133816domain: NAppears in sequencesNumber of rooted trees with n nodes, 2 of which are labeled.at n=9A000524Sum{T(n,k)}, k = 0,1,...,n, where T is the array defined in A024996.at n=12A026080Numbers k such that the period of the continued fraction for sqrt(k) contains exactly 93 ones.at n=9A031861