Number of nX4 arrays of occupancy after each element moves to some king-move neighbor, without move-in move-out straight through or left turns.
A221748
Number of nX4 arrays of occupancy after each element moves to some king-move neighbor, without move-in move-out straight through or left turns.
Terms
- a(0) =1a(1) =817a(2) =32129a(3) =3389575a(4) =241376639a(5) =19762890960
External references
- oeis: A221748