Number of ways to place n points on an n X n square grid so that no more than 2 points are on a vertical or horizontal straight line.
A279444
Number of ways to place n points on an n X n square grid so that no more than 2 points are on a vertical or horizontal straight line.
Terms
- a(0) =1a(1) =6a(2) =78a(3) =1428a(4) =34020a(5) =1005720a(6) =35526120a(7) =1460297160a(8) =68483325960
External references
- oeis: A279444