399466domain: NAppears in sequencesNumber of rooted forests with n nodes in which each component contains at least two nodes.at n=16A174145Number of (3+1) X (n+1) 0..2 arrays with every 2 X 2 subblock diagonal minus antidiagonal sum nondecreasing horizontally, vertically and ne-to-sw antidiagonally.at n=8A253497