Number of n X 2 arrays of occupancy after each element stays put or moves to some horizontal, vertical or antidiagonal neighbor, without consecutive moves in the same direction.
A221883
Number of n X 2 arrays of occupancy after each element stays put or moves to some horizontal, vertical or antidiagonal neighbor, without consecutive moves in the same direction.
Terms
- a(0) =3a(1) =33a(2) =326a(3) =3223a(4) =31832a(5) =314426a(6) =3105733a(7) =30676867a(8) =303010527a(9) =2992984402a(10) =29563182686a(11) =292010132356
External references
- oeis: A221883