928340190

Appears in sequences

• Number of acyclic orientations of the Turán graph T(n,3).at n=13A266858
• Number T(n,k,j) of acyclic orientations of the complete tripartite graph K_{n,k,j}; triangle of triangles T(n,k,j), n>=0, k=0..n, j=0..k, read by rows.at n=49A372261