Number of nX4 0..1 arrays with no 1 equal to more than two of its horizontal and vertical neighbors.

A283126

Number of nX4 0..1 arrays with no 1 equal to more than two of its horizontal and vertical neighbors.

Terms

    a(0) =16a(1) =209a(2) =2521a(3) =30824a(4) =376359a(5) =4598361a(6) =56176300a(7) =686250407a(8) =8383419717a(9) =102414019954

External references