Number of n X 3 0..3 arrays avoiding the pattern z z+1 z in any row or column.
A207129
Number of n X 3 0..3 arrays avoiding the pattern z z+1 z in any row or column.
Terms
- a(0) =61a(1) =3721a(2) =197144a(3) =10372917a(4) =546965177a(5) =28848306206
External references
- oeis: A207129