Number of 3Xn arrays of occupancy after each element stays put or moves to some horizontal or antidiagonal neighbor, without consecutive moves in the same direction.
A221695
Number of 3Xn arrays of occupancy after each element stays put or moves to some horizontal or antidiagonal neighbor, without consecutive moves in the same direction.
Terms
- a(0) =1a(1) =144a(2) =3112a(3) =95076a(4) =2627760a(5) =74531185a(6) =2098932856a(7) =59210733473
External references
- oeis: A221695