85253

Appears in sequences

• Take an n X n square grid of points in the plane; a(n) = number of ways to divide the points into two sets using a straight line.at n=22A114043
• Number of (4+2) X (n+2) 0..3 arrays with every 3 X 3 subblock row and diagonal sum equal to 0 3 5 6 or 7 and every 3 X 3 column and antidiagonal sum not equal to 0 3 5 6 or 7.at n=18A252388