Number of 3Xn 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.

A284077

Number of 3Xn 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) =0a(2) =15a(3) =275a(4) =3174a(5) =31898a(6) =300008a(7) =2695374a(8) =23315931a(9) =196337438a(10) =1619907608a(11) =13142006271a(12) =105144896153a(13) =831492737200

External references