Number of zero-sum nX4 -2..2 arrays with every element equal to at least one horizontal or vertical neighbor.

A201887

Number of zero-sum nX4 -2..2 arrays with every element equal to at least one horizontal or vertical neighbor.

Terms

    a(0) =5a(1) =413a(2) =26003a(3) =2171313a(4) =184247585a(5) =16910703303

External references