Number of nX4 arrays of occupancy after each element moves to some king-move neighbor.
A221191
Number of nX4 arrays of occupancy after each element moves to some king-move neighbor.
Terms
- a(0) =4a(1) =3605a(2) =577414a(3) =106838218a(4) =19002899459
External references
- oeis: A221191