Number of nX6 arrays of occupancy after each element moves to some horizontal or antidiagonal neighbor, without 2-loops or left turns.
A221785
Number of nX6 arrays of occupancy after each element moves to some horizontal or antidiagonal neighbor, without 2-loops or left turns.
Terms
- a(0) =0a(1) =21a(2) =142a(3) =1325a(4) =13682a(5) =109702a(6) =1104476a(7) =9561346a(8) =89663745
External references
- oeis: A221785