Half the number of nX9 binary arrays with each element equal to at least two neighbors.
A180758
Half the number of nX9 binary arrays with each element equal to at least two neighbors.
Terms
- a(0) =0a(1) =21a(2) =67a(3) =2059a(4) =41755a(5) =986376a(6) =22238670a(7) =514990479a(8) =11843513563a(9) =273193577866
External references
- oeis: A180758