988589

Appears in sequences

• Number of zero-sum n X n -2..2 arrays with every element unequal to at most two horizontal and vertical neighbors.at n=3A201796
• Number of zero-sum nX4 -2..2 arrays with every element unequal to at most two horizontal and vertical neighbors.at n=3A201799
• T(n,k)=Number of zero-sum nXk -2..2 arrays with every element unequal to at most two horizontal and vertical neighbors.at n=24A201803