1262816

Appears in sequences

• Number of nonintersecting (or self-avoiding) rook paths joining opposite corners of an n X n grid.at n=5A007764
• Triangle of self-avoiding rook paths joining opposite corners of n X k board.at n=20A064297
• Square array read by antidiagonals of self-avoiding rook paths joining opposite corners of n X k board.at n=60A064298
• Number of nonintersecting rook paths joining opposite corners of 6 X n board.at n=5A145403