8790016domain: NAppears in sequencesNumber of spanning forests of the n X n grid graph.at n=3A080691Array read by antidiagonals: T(m,n) is the number of acyclic spanning subgraphs in the grid graph P_m X P_n.at n=24A360194Number of acyclic spanning subgraphs in the 4 X n grid graph.at n=3A360195