557568000

Appears in sequences

• Number of spanning trees in P_5 x P_n.at n=4A003779
• Number of spanning trees in n X n grid.at n=4A007341
• Square array read by antidiagonals: T(m,n) = number of spanning trees in an m X n grid.at n=40A116469
• Number of domino tilings of the n X n grid with upper left corner removed iff n is odd.at n=9A189002
• Number of domino tilings of the 9 X n grid with upper left corner removed iff n is odd.at n=9A189005