Number of 3 X n 0..3 arrays avoiding the pattern z-2 z-1 z in any row, column, nw-to-se diagonal or ne-to-sw antidiagonal.
A206841
Number of 3 X n 0..3 arrays avoiding the pattern z-2 z-1 z in any row, column, nw-to-se diagonal or ne-to-sw antidiagonal.
Terms
- a(0) =62a(1) =3844a(2) =205518a(3) =11091161a(4) =598618182a(5) =32326073197
External references
- oeis: A206841