822954

Appears in sequences

• Number of mobiles (circular rooted trees) with n nodes and 4 leaves.at n=28A055342
• Number A(n,k) of acyclic orientations of the complete tripartite graph K_{n,n,k}; square array A(n,k), n>=0, k>=0, read by antidiagonals.at n=25A372254
• 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=32A372261