1509143496

Appears in sequences

• Number of nX4 0..n+4-2 arrays with upper left zero and lower right n+4-2 and each element differing from its horizontal and antidiagonal neighbors by one or two.at n=5A265462
• Number of 6Xn 0..6+n-2 arrays with upper left zero and lower right 6+n-2 and each element differing from its horizontal and antidiagonal neighbors by one or two.at n=3A265471