Number of 2Xn 0..1 arrays with no 1 equal to more than three of its horizontal, diagonal and antidiagonal neighbors, with the exception of exactly one element.
A283951
Number of 2Xn 0..1 arrays with no 1 equal to more than three of its horizontal, diagonal and antidiagonal neighbors, with the exception of exactly one element.
Terms
- a(0) =0a(1) =0a(2) =2a(3) =16a(4) =84a(5) =408a(6) =1926a(7) =8776a(8) =38912a(9) =169456a(10) =727914a(11) =3091712a(12) =13010668a(13) =54334792a(14) =225449486a(15) =930278584a(16) =3820249240a(17) =15622389664a(18) =63649588850a(19) =258473068912
External references
- oeis: A283951