Number of n X 2 arrays of occupancy after each element stays put or moves to some horizontal, vertical or antidiagonal neighbor.
A221162
Number of n X 2 arrays of occupancy after each element stays put or moves to some horizontal, vertical or antidiagonal neighbor.
Terms
- a(0) =3a(1) =33a(2) =352a(3) =3721a(4) =39254a(5) =413908a(6) =4363921a(7) =46008619a(8) =485064009a(9) =5113971944a(10) =53915979657a(11) =568429529006
External references
- oeis: A221162