Number of n X 3 0..3 arrays avoiding the pattern z-1 z-1 z in any row, column, nw-to-se diagonal or ne-to-sw antidiagonal.
A206969
Number of n X 3 0..3 arrays avoiding the pattern z-1 z-1 z in any row, column, nw-to-se diagonal or ne-to-sw antidiagonal.
Terms
- a(0) =61a(1) =3721a(2) =180294a(3) =8688551a(4) =417476451a(5) =20061347530a(6) =964232197214
External references
- oeis: A206969