Number of 2 X n arrays of occupancy after each element stays put or moves to some horizontal or antidiagonal neighbor.
A221126
Number of 2 X n arrays of occupancy after each element stays put or moves to some horizontal or antidiagonal neighbor.
Terms
- a(0) =1a(1) =21a(2) =200a(3) =1950a(4) =19005a(5) =185164a(6) =1803949a(7) =17574675a(8) =171218008a(9) =1668058947a(10) =16250746331a(11) =158319795778
External references
- oeis: A221126