197281

Appears in sequences

• Number of possible chess games at the end of the n-th ply plus number of games that terminate (i.e., mate) in fewer than n plies.at n=4A006494
• Number of chess games with n plies (another version).at n=4A007577
• Number of possible chess games at the end of the n-th ply.at n=4A048987
• Number of planar strictly 2-connected graphs on n edges.at n=15A289471