Number of 2 X n arrays of occupancy after each element stays put or moves to some horizontal or antidiagonal neighbor, without consecutive moves in the same direction.
A221694
Number of 2 X n arrays of occupancy after each element stays put or moves to some horizontal or antidiagonal neighbor, without consecutive moves in the same direction.
Terms
- a(0) =1a(1) =21a(2) =152a(3) =1336a(4) =11036a(5) =92660a(6) =774380a(7) =6479664a(8) =54200980a(9) =453418640a(10) =3792991120a(11) =31729761276a(12) =265430689860
External references
- oeis: A221694