Number of n X 3 0..1 arrays with no 1 equal to more than three of its horizontal, diagonal and antidiagonal neighbors, with the exception of exactly two elements.

A284070

Number of n X 3 0..1 arrays with no 1 equal to more than three of its horizontal, diagonal and antidiagonal neighbors, with the exception of exactly two elements.

Terms

    a(0) =0a(1) =1a(2) =15a(3) =314a(4) =3764a(5) =37557a(6) =353608a(7) =3178404a(8) =27582216a(9) =233397609a(10) =1936592863a(11) =15815427428a(12) =127479709618

External references