Number of nX6 arrays of occupancy after each element moves to some horizontal or antidiagonal neighbor, with no occupancy greater than 2.

A221253

Number of nX6 arrays of occupancy after each element moves to some horizontal or antidiagonal neighbor, with no occupancy greater than 2.

Terms

    a(0) =16a(1) =2500a(2) =488601a(3) =103489929a(4) =22466712321

External references