Number of nX4 arrays of occupancy after each element stays put or moves to some king-move neighbor, with no occupancy greater than 2.

A221268

Number of nX4 arrays of occupancy after each element stays put or moves to some king-move neighbor, with no occupancy greater than 2.

Terms

    a(0) =17a(1) =1073a(2) =71977a(3) =5007745a(4) =355645325a(5) =25512853201

External references