Number of n X n 0..3 arrays avoiding the pattern z-1 z-1 z in any row or column.
A207051
Number of n X n 0..3 arrays avoiding the pattern z-1 z-1 z in any row or column.
Terms
- a(0) =4a(1) =256a(2) =197144a(3) =1980856064
External references
- oeis: A207051