Number of nX5 0..2 arrays avoiding the patterns z z+1 z or z z-1 z in any row, column or nw-se diagonal.
A207225
Number of nX5 0..2 arrays avoiding the patterns z z+1 z or z z-1 z in any row, column or nw-se diagonal.
Terms
- a(0) =161a(1) =25921a(2) =1482361a(3) =115679881a(4) =8779228417a(5) =648206318305
External references
- oeis: A207225