Number of nonequivalent ways to place k>=0 points on an n X n square grid so that no more than 2 points are on a vertical or horizontal straight line.
A279454
Number of nonequivalent ways to place k>=0 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) =2a(1) =6a(2) =54a(3) =1026a(4) =38931a(5) =2198241a(6) =167110761a(7) =16248457762
External references
- oeis: A279454