Number of 2 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.
A206840
Number of 2 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) =1a(1) =16a(2) =256a(3) =3844a(4) =58081a(5) =876096a(6) =13220496a(7) =199487376a(8) =3010168225a(9) =45421839376a(10) =685391917456
External references
- oeis: A206840