Number of ways to arrange 5 indistinguishable points on an n X n square grid so that no three points are collinear at any angle.

A194190

Number of ways to arrange 5 indistinguishable points on an n X n square grid so that no three points are collinear at any angle.

Terms

    a(0) =0a(1) =0a(2) =28a(3) =1668a(4) =25052a(5) =215448a(6) =1189868a(7) =5199888a(8) =18520572a(9) =56978440a(10) =155627304a(11) =388897892a(12) =894254904a(13) =1932504496a(14) =3945470564a(15) =7669533756a(16) =14291010972a(17) =25694009628a(18) =44662697948a(19) =75451394832a(20) =124066723008a(21) =199190308172

External references