Number of n X 4 arrays of occupancy after each element stays put or moves to some horizontal, vertical or antidiagonal neighbor, with no occupancy greater than 2.

A221376

Number of n X 4 arrays of occupancy after each element stays put or moves to some horizontal, vertical or antidiagonal neighbor, with no occupancy greater than 2.

Terms

    a(0) =17a(1) =1035a(2) =68006a(3) =4616125a(4) =318041768a(5) =22033399959

External references