Number of nX3 arrays of occupancy after each element moves to some horizontal, diagonal or antidiagonal neighbor, without 2-loops.
A221348
Number of nX3 arrays of occupancy after each element moves to some horizontal, diagonal or antidiagonal neighbor, without 2-loops.
Terms
- a(0) =0a(1) =18a(2) =370a(3) =6893a(4) =122690a(5) =2152076a(6) =37541550a(7) =653557217a(8) =11369057766a(9) =197715942522
External references
- oeis: A221348