73046domain: NAppears in sequencesNumber of non-equivalent (mod D_3) ways to place 4 indistinguishable points on a triangular grid of side n so that no two of them are adjacent.at n=8A239574G.f.: x * Product_{k>=1} (1 + a(k)*(-x)^k)^((-1)^k).at n=14A308246