65386domain: NAppears in sequencesTotal number of interior nodes in all series-parallel networks with n labeled edges, multiple edges not allowed.at n=7A058475Number of partitions of n with nonnegative rank.at n=46A064174First differences of A006128.at n=38A138137a(n) = Sum_{k=0..n} 2^k * k^(n-k).at n=9A351279