Half the number of nX5 binary arrays with each element equal to at least two neighbors.
A180754
Half the number of nX5 binary arrays with each element equal to at least two neighbors.
Terms
- a(0) =0a(1) =3a(2) =3a(3) =21a(4) =86a(5) =410a(6) =1874a(7) =8840a(8) =41755a(9) =197883a(10) =936625a(11) =4434387a(12) =20996674a(13) =99434998a(14) =470911050a(15) =2230166446a(16) =10561720749a(17) =50018822099a(18) =236882697591
External references
- oeis: A180754