Number of zero-sum nX4 -3..3 arrays with every element equal to at least one horizontal or vertical neighbor.

A202133

Number of zero-sum nX4 -3..3 arrays with every element equal to at least one horizontal or vertical neighbor.

Terms

    a(0) =7a(1) =1205a(2) =135315a(3) =22197147a(4) =3628653641

External references