Number of nX3 0..2 arrays avoiding the pattern z-2 z-1 z in any row, column, nw-to-se diagonal or ne-to-sw antidiagonal.
A207545
Number of nX3 0..2 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) =26a(1) =676a(2) =14974a(3) =327899a(4) =7104784a(5) =153718531a(6) =3323115736a(7) =71828785449
External references
- oeis: A207545