Number of ways to place 6 points on an n X n square grid so that no more than 2 points are on a vertical or horizontal straight line.
A279440
Number of ways to place 6 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) =0a(1) =0a(2) =6a(3) =2040a(4) =71400a(5) =1005720a(6) =8421630a(7) =50092896a(8) =233483040a(9) =905925600a(10) =3045791430a(11) =9125544120a(12) =24868110696a(13) =62593429080a(14) =147255640350a(15) =326843422080a(16) =689604309120
External references
- oeis: A279440