Number of ways to arrange 4 indistinguishable points on an n X n X n triangular grid so that no three points are collinear at any angle.

A194132

Number of ways to arrange 4 indistinguishable points on an n X n X n triangular grid so that no three points are collinear at any angle.

Terms

    a(0) =0a(1) =0a(2) =6a(3) =114a(4) =843a(5) =4122a(6) =14988a(7) =45414a(8) =119340a(9) =281442a(10) =608616a(11) =1228812a(12) =2338779a(13) =4240284a(14) =7371414a(15) =12354156a(16) =20052846a(17) =31653108a(18) =48726846a(19) =73358964a(20) =108233781a(21) =156793974a(22) =223400004a(23) =313529940a(24) =433929258a(25) =592922880a(26) =800651538a(27) =1069378740

External references