Number of n X n 0..3 arrays avoiding the pattern z-2 z-1 z in any row or column.
A207284
Number of n X n 0..3 arrays avoiding the pattern z-2 z-1 z in any row or column.
Terms
- a(0) =4a(1) =256a(2) =216952a(3) =2663436930
External references
- oeis: A207284