Number of nX9 binary arrays with top left value 1 and no two ones adjacent horizontally, vertically or nw-se diagonally.
A228284
Number of nX9 binary arrays with top left value 1 and no two ones adjacent horizontally, vertically or nw-se diagonally.
Terms
- a(0) =34a(1) =277a(2) =9637a(3) =186414a(4) =4416695a(5) =97268701a(6) =2197847780a(7) =49208639399
External references
- oeis: A228284