Number of nX3 0..1 arrays with no 1 equal to more than three of its horizontal, vertical and antidiagonal neighbors, with the exception of exactly one element.

A283489

Number of nX3 0..1 arrays with no 1 equal to more than three of its horizontal, vertical and antidiagonal neighbors, with the exception of exactly one element.

Terms

    a(0) =0a(1) =2a(2) =59a(3) =576a(4) =5444a(5) =47712a(6) =402588a(7) =3304736a(8) =26585976a(9) =210604104a(10) =1648084920a(11) =12770161232a(12) =98143291572a(13) =749097112304

External references