Number of ways to arrange 3 indistinguishable points on an n X n X n triangular grid so that no three points are in the same row or diagonal.

A194475

Number of ways to arrange 3 indistinguishable points on an n X n X n triangular grid so that no three points are in the same row or diagonal.

Terms

    a(0) =0a(1) =1a(2) =17a(3) =105a(4) =410a(5) =1225a(6) =3066a(7) =6762a(8) =13560a(9) =25245a(10) =44275a(11) =73931a(12) =118482a(13) =183365a(14) =275380a(15) =402900a(16) =576096a(17) =807177a(18) =1110645a(19) =1503565a(20) =2005850a(21) =2640561a(22) =3434222a(23) =4417150a(24) =5623800a(25) =7093125a(26) =8868951a(27) =11000367a(28) =13542130a(29) =16555085

External references