Number of nX4 arrays of occupancy after each element stays put or moves to some horizontal, diagonal or antidiagonal neighbor, with no occupancy greater than 2.
A221343
Number of nX4 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) =17a(1) =1033a(2) =66077a(3) =4413085a(4) =299240982a(5) =20386200143
External references
- oeis: A221343