Number of nX3 arrays of occupancy after each element moves to some horizontal, vertical or antidiagonal neighbor, without move-in move-out straight through or left turns.
A221806
Number of nX3 arrays of occupancy after each element moves to some horizontal, vertical or antidiagonal neighbor, without move-in move-out straight through or left turns.
Terms
- a(0) =0a(1) =34a(2) =154a(3) =3426a(4) =30716a(5) =437374a(6) =4798574a(7) =60643243a(8) =708210084a(9) =8638426210a(10) =102851006026
External references
- oeis: A221806