Number of nX5 0..2 arrays avoiding the patterns z z+1 z or z z-1 z in any row or column.
A207012
Number of nX5 0..2 arrays avoiding the patterns z z+1 z or z z-1 z in any row or column.
Terms
- a(0) =161a(1) =25921a(2) =2113177a(3) =201211481a(4) =18649387825
External references
- oeis: A207012