52764

Appears in sequences

• Number of similarity classes of triangles which can be drawn using the lattice points in an n X n grid for vertices.at n=25A028492
• Irregular triangle read by rows: T(n,k) (n >= 1, 0 <= k <= (n-1)*(n-2)/2) = number of weakly connected subdigraphs of the transitive tournament on n nodes that have k arcs.at n=32A350610