112777827840domain: NAppears in sequencesArray read by antidiagonals: T(n,m) is the number of Hamiltonian cycles in the rook graph K_n X K_m.at n=39A269562Array read by antidiagonals: T(n,m) is the number of Hamiltonian cycles in the rook graph K_n X K_m.at n=41A269562Number of Hamiltonian cycles in the 4 X n rook graph.at n=5A341499