Number of nonintersecting rook paths joining opposite corners of 5 X n board.
1, 16, 125, 976, 8512, 79384, 752061, 7110272, 67005561, 630588698, 5933085772
1 seqfan posts
Tue Sep 14 10:12:57 CEST 2010 [seqfan] non-intersecting rook paths from corner to corner