Number of nX7 binary arrays with top left value 1 and no two ones adjacent horizontally, vertically, diagonally or antidiagonally.
A228505
Number of nX7 binary arrays with top left value 1 and no two ones adjacent horizontally, vertically, diagonally or antidiagonally.
Terms
- a(0) =13a(1) =43a(2) =684a(3) =4749a(4) =49101a(5) =413786a(6) =3862849a(7) =34229311a(8) =311423874a(9) =2795565191a(10) =25267110999a(11) =227577191098
External references
- oeis: A228505