Number of 4Xn arrays of occupancy after each element moves to some horizontal or antidiagonal neighbor.
A221090
Number of 4Xn arrays of occupancy after each element moves to some horizontal or antidiagonal neighbor.
Terms
- a(0) =0a(1) =64a(2) =3024a(3) =279841a(4) =20489472a(5) =1572836281a(6) =118704053710
External references
- oeis: A221090