156699

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=33A028492
• Triangle T, read by rows, equal to the matrix square of triangle A113350, where T transforms column k of T into column k+1 of T.at n=21A113355
• Column 0 of triangle A113355, which is the matrix square of A113350.at n=6A113356