Number of nX4 arrays of occupancy after each element moves to some horizontal, diagonal or antidiagonal neighbor, without 2-loops.
A221349
Number of nX4 arrays of occupancy after each element moves to some horizontal, diagonal or antidiagonal neighbor, without 2-loops.
Terms
- a(0) =0a(1) =148a(2) =12296a(3) =938070a(4) =68449305a(5) =4937698670a(6) =354502871047
External references
- oeis: A221349