1055025

Appears in sequences

• Expansion of x*(1 + x + x^2)/(1 - 2*x + x^5).at n=21A089074
• Number of nonequivalent ways to place 6 points on an n X n square grid so that no more than 2 points are on a vertical or horizontal straight line.at n=6A279450
• Triangle read by rows: T(n, k) is the number of nonequivalent ways to place k points on an n X n square grid so that no more than 2 points are on a vertical or horizontal straight line.at n=53A279453