Number of nX4 arrays of occupancy after each element moves to some horizontal or vertical neighbor but without 2-loops.
A217342
Number of nX4 arrays of occupancy after each element moves to some horizontal or vertical neighbor but without 2-loops.
Terms
- a(0) =0a(1) =38a(2) =2389a(3) =120908a(4) =5756974a(5) =267947653a(6) =12350550690a(7) =566789163488
External references
- oeis: A217342