Number of nX3 0..3 arrays avoiding the pattern z-2 z-1 z in any row or column.
A207285
Number of nX3 0..3 arrays avoiding the pattern z-2 z-1 z in any row or column.
Terms
- a(0) =62a(1) =3844a(2) =216952a(3) =12359893a(4) =702401282a(5) =39940889449
External references
- oeis: A207285