Number of 3Xn arrays of occupancy after each element stays put or moves to some horizontal, diagonal or antidiagonal neighbor, with no occupancy greater than 2.
A221346
Number of 3Xn arrays of occupancy after each element stays put or moves to some horizontal, diagonal or antidiagonal neighbor, with no occupancy greater than 2.
Terms
- a(0) =1a(1) =137a(2) =2856a(3) =66077a(4) =1534835a(5) =36054361a(6) =849482126a(7) =20037479191a(8) =472778990849
External references
- oeis: A221346