24672560domain: NAppears in sequencesValues of C(n,3) which can be written as C(x,3) + C(y,3).at n=17A034404a(n) = ((n-th prime)^6-(n-th prime^2))/6.at n=8A138445The number of inequivalent ways to color the vertices of a regular octahedron using at most n colors.at n=31A198833