1449655468domain: NAppears in sequencesNumber of Hamiltonian paths in P_7 X P_n.at n=8A358794Number of Hamiltonian paths in P_9 X P_n.at n=6A358796Triangle read by rows: T(n,k) is the number of paths traveling orthogonally on an n X k grid that visit every cell.at n=42A366399