49766

Appears in sequences

• Denominators of convergents to 2*Pi.at n=7A242859
• Denominators of successive rational approximations converging to 2*Pi from above for n >= 1, with a(-1) = -1 and a(0) = 0.at n=10A299923
• a(n) is the number of distinct triangles whose sides do not pass through a grid point and whose vertices are three points of an n X n grid.at n=37A372217