Number of n X n arrays of occupancy after each element moves to some horizontal or antidiagonal neighbor, without 2-loops.

A221109

Number of n X n arrays of occupancy after each element moves to some horizontal or antidiagonal neighbor, without 2-loops.

Terms

    a(0) =0a(1) =0a(2) =8a(3) =3706a(4) =11678172a(5) =326416281638

External references