Number of 6Xn arrays of occupancy after each element stays put or moves to some horizontal or antidiagonal neighbor, with no occupancy greater than 2.

A221333

Number of 6Xn arrays of occupancy after each element stays put or moves to some horizontal or antidiagonal neighbor, with no occupancy greater than 2.

Terms

    a(0) =1a(1) =19601a(2) =9637322a(3) =7010554450

External references