Number of 4 X n arrays of occupancy after each element moves to some horizontal, diagonal or antidiagonal neighbor, with no occupancy greater than 2.
A221203
Number of 4 X n arrays of occupancy after each element moves to some horizontal, diagonal or antidiagonal neighbor, with no occupancy greater than 2.
Terms
- a(0) =0a(1) =289a(2) =212a(3) =427716a(4) =4984812a(5) =1026177156a(6) =30374196832
External references
- oeis: A221203