109797321

Appears in sequences

• Number of zero-sum n X n -1..1 arrays with every element equal to at least one horizontal or vertical neighbor.at n=4A201839
• Number of zero-sum nX5 -1..1 arrays with every element equal to at least one horizontal or vertical neighbor.at n=4A201844
• T(n,k)=Number of zero-sum nXk -1..1 arrays with every element equal to at least one horizontal or vertical neighbor.at n=40A201847