Number of nX3 0..3 arrays avoiding the pattern z-2 z-1 z in any row, column, nw-to-se diagonal or ne-to-sw antidiagonal.
A206833
Number of nX3 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) =11086238a(4) =594138770a(5) =31871929292
External references
- oeis: A206833