284108

Appears in sequences

• Number of ways to place 3 nonattacking grasshoppers on a toroidal chessboard of size n x n.at n=10A190398
• Number of nX5 0..1 arrays avoiding 0 0 0 and 1 1 1 horizontally and 0 0 1 and 1 0 0 vertically.at n=6A207658
• Number of 7Xn 0..1 arrays avoiding 0 0 0 and 1 1 1 horizontally and 0 0 1 and 1 0 0 vertically.at n=4A207665