127440

Appears in sequences

• Poincaré series [or Poincare series] of Lie algebra associated with a certain braid group.at n=21A007990
• Number of collinear point 5-tuples in an n X n X n cubical grid.at n=9A178263
• Triangle read by rows: T(n,k) is the number of 3-dimensional balanced ballot paths of 3n steps such that the height is exactly k, 2 <= k <= 2*n.at n=51A387912