Number of nX4 0..3 arrays avoiding the pattern z-2 z-1 z in any row or column.
A207286
Number of nX4 0..3 arrays avoiding the pattern z-2 z-1 z in any row or column.
Terms
- a(0) =241a(1) =58081a(2) =12359893a(3) =2663436930a(4) =572065794890
External references
- oeis: A207286