900013270

Appears in sequences

• Array read by antidiagonals: T(m,n) is the number of acyclic spanning subgraphs in the grid graph P_m X P_n.at n=31A360194
• Array read by antidiagonals: T(m,n) is the number of acyclic spanning subgraphs in the grid graph P_m X P_n.at n=32A360194
• Number of acyclic spanning subgraphs in the 4 X n grid graph.at n=4A360195