20984924domain: NAppears in sequencesNumber of ways to place n^2 nonattacking kings on a 2n X 2n cylindrical chessboard.at n=7A137432Number of ways to place 7n nonattacking kings on a 14 X 2n cylindrical chessboard.at n=6A195004Number of ways to place 7n nonattacking kings on a vertical cylinder 14 X 2n.at n=6A195595