Number of n X 3 arrays of occupancy after each element moves to some horizontal or antidiagonal neighbor, without consecutive moves in the same direction.
A221478
Number of n X 3 arrays of occupancy after each element moves to some horizontal or antidiagonal neighbor, without consecutive moves in the same direction.
Terms
- a(0) =0a(1) =8a(2) =50a(3) =313a(4) =1980a(5) =12494a(6) =78880a(7) =497940a(8) =3143384a(9) =19843336a(10) =125265720a(11) =790768832a(12) =4991910856a(13) =31512587760a(14) =198930468440
External references
- oeis: A221478