375597

Appears in sequences

• Pisot sequences L(3,7) or S(3,7).at n=13A020730
• Number of n X n binary arrays symmetric about both diagonal and antidiagonal with all ones connected only in a 1111-1111 pattern in any orientation.at n=21A146937
• Number of nonequivalent ways to place 2n nonattacking kings on a 4 X 2n chessboard under all symmetry operations of the rectangle.at n=9A321614