Number of n X 4 arrays of occupancy after each element moves to some horizontal, vertical or antidiagonal neighbor.

A220941

Number of n X 4 arrays of occupancy after each element moves to some horizontal, vertical or antidiagonal neighbor.

Terms

    a(0) =4a(1) =2056a(2) =291080a(3) =43253705a(4) =6388528170a(5) =944223520057

External references