Number of nX4 arrays of occupancy after each element moves to some horizontal, diagonal or antidiagonal neighbor.
A221242
Number of nX4 arrays of occupancy after each element moves to some horizontal, diagonal or antidiagonal neighbor.
Terms
- a(0) =4a(1) =484a(2) =45369a(3) =4096576a(4) =367565584a(5) =32940435025
External references
- oeis: A221242