Triangle read by rows: T(n, k) is the number of nonequivalent ways to place k points on an n X n square grid so that no more than 2 points are on a vertical or horizontal straight line.
A279453
Triangle read by rows: T(n, k) is the number of nonequivalent ways to place k 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) =1a(2) =1a(3) =1a(4) =2a(5) =1a(6) =1a(7) =1a(8) =3a(9) =8a(10) =14a(11) =17a(12) =9a(13) =2a(14) =1a(15) =3a(16) =21a(17) =73a(18) =202a(19) =306a(20) =285a(21) =115a(22) =20a(23) =1a(24) =6a(25) =49a(26) =301a(27) =1397a(28) =4361a(29) =9110
External references
- oeis: A279453