Number of n X n 0..3 arrays avoiding the pattern z z+1 z in any row or column.
A207128
Number of n X n 0..3 arrays avoiding the pattern z z+1 z in any row or column.
Terms
- a(0) =4a(1) =256a(2) =197144a(3) =1981367324
External references
- oeis: A207128