Number of 4Xn arrays of occupancy after each element stays put or moves to some horizontal or antidiagonal neighbor.
A221128
Number of 4Xn arrays of occupancy after each element stays put or moves to some horizontal or antidiagonal neighbor.
Terms
- a(0) =1a(1) =987a(2) =118472a(3) =16436223a(4) =2152770692a(5) =282454178707
External references
- oeis: A221128