Number of n X n binary arrays with some element plus some horizontally, diagonally or antidiagonally adjacent neighbor totalling two not more than once.
A269069
Number of n X n binary arrays with some element plus some horizontally, diagonally or antidiagonally adjacent neighbor totalling two not more than once.
Terms
- a(0) =2a(1) =11a(2) =123a(3) =3288a(4) =165607a(5) =18220241a(6) =4064720816
External references
- oeis: A269069