Number of n X n 0..3 arrays avoiding the patterns z z+1 z or z z-1 z in any row or column.
A207529
Number of n X n 0..3 arrays avoiding the patterns z z+1 z or z z-1 z in any row or column.
Terms
- a(0) =4a(1) =256a(2) =147006a(3) =1066263778
External references
- oeis: A207529