1532496domain: NAppears in sequencesNumber of tilings of a 5 X n rectangle using pentominoes of any shape and monominoes.at n=5A278456Number A(n,k) of tilings of a k X n rectangle using pentominoes of any shape and monominoes; square array A(n,k), n>=0, k>=0, read by antidiagonals.at n=60A278657