Number of nX3 arrays of occupancy after each element moves to some horizontal, vertical or antidiagonal neighbor, without 2-loops or left turns.
A221825
Number of nX3 arrays of occupancy after each element moves to some horizontal, vertical or antidiagonal neighbor, without 2-loops or left turns.
Terms
- a(0) =0a(1) =16a(2) =202a(3) =2930a(4) =41618a(5) =592601a(6) =8434490a(7) =120053263a(8) =1708776751a(9) =24321871624a(10) =346185271087
External references
- oeis: A221825