Number of n X n arrays of occupancy after each element stays put or moves to some horizontal or vertical neighbor, with no occupancy greater than 2.
A221296
Number of n X n arrays of occupancy after each element stays put or moves to some horizontal or vertical neighbor, with no occupancy greater than 2.
Terms
- a(0) =1a(1) =19a(2) =2899a(3) =4119299a(4) =53074198285
External references
- oeis: A221296