8402216

Appears in sequences

• Number of n X n binary matrices with each 1 having at most 2 adjacent 1's.at n=5A068471
• Number of nX5 0..1 arrays with no 1 equal to more than two of its horizontal and vertical neighbors.at n=4A283127
• T(n,k)=Number of nXk 0..1 arrays with no 1 equal to more than two of its horizontal and vertical neighbors.at n=40A283130