3392964domain: NAppears in sequencesSquares of numbers of rooted trees.at n=10A001257Number of ways to place 4n nonattacking kings on a vertical cylinder 8 X 2n.at n=10A195592Number of ways to place 11n nonattacking kings on a 22 X 2n cylindrical chessboard.at n=3A195655Squares in A353729.at n=14A367451