Number of nX4 0..2 arrays with every nonzero element less than or equal to some horizontal or vertical neighbor.

A202885

Number of nX4 0..2 arrays with every nonzero element less than or equal to some horizontal or vertical neighbor.

Terms

    a(0) =22a(1) =1849a(2) =109119a(3) =6092872a(4) =348151747a(5) =19914296913

External references