Triangle read by rows: T(n, k) is the number of 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.
A279445
Triangle read by rows: T(n, k) is the number of 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) =4a(4) =6a(5) =4a(6) =1a(7) =1a(8) =9a(9) =36a(10) =78a(11) =90a(12) =45a(13) =6a(14) =1a(15) =16a(16) =120a(17) =528a(18) =1428a(19) =2304a(20) =2040a(21) =816a(22) =90a(23) =1a(24) =25a(25) =300a(26) =2200a(27) =10600a(28) =34020a(29) =71400
External references
- oeis: A279445