Number of 3Xn arrays of occupancy after each element stays put or moves to some horizontal, diagonal or antidiagonal neighbor.
A221724
Number of 3Xn arrays of occupancy after each element stays put or moves to some horizontal, diagonal or antidiagonal neighbor.
Terms
- a(0) =1a(1) =306a(2) =11733a(3) =544757a(4) =24019048a(5) =1068474439a(6) =47427140282
External references
- oeis: A221724