Number of 4Xn arrays of occupancy after each element stays put or moves to some horizontal, diagonal or antidiagonal neighbor, with no occupancy greater than 2.
A221347
Number of 4Xn arrays of occupancy after each element stays put or moves to some horizontal, diagonal or antidiagonal neighbor, with no occupancy greater than 2.
Terms
- a(0) =1a(1) =1001a(2) =60807a(3) =4413085a(4) =308965149a(5) =22068912649
External references
- oeis: A221347