8931928887domain: NAppears in sequencesa(n) = n^(n-2)*(n+2)^(n-1).at n=6A006236Array read by antidiagonals: T(n,m) is the number of spanning trees in the n X m rook graph K_n X K_m.at n=29A384845Array read by antidiagonals: T(n,m) is the number of spanning trees in the n X m rook graph K_n X K_m.at n=34A384845