720417

Appears in sequences

• Number of binary arrangements on n X n array without adjacent three 1's.at n=5A067968
• Number of nX5 0..1 arrays with no 1 equal to more than one of its horizontal and vertical neighbors.at n=4A282993
• T(n,k) is the number of n X k 0..1 arrays with no 1 equal to more than one of its horizontal and vertical neighbors.at n=40A282996