673050

Appears in sequences

• Number of edges formed inside a triangle with edge length 1 by the straight line segments mutually connecting all vertices and points that divide the sides into segments with lengths equal to the Farey series of order n = A006842(n,k)/A006843(n,k), k = 1..A005728(n).at n=7A358950
• Expansion of g.f. A(x) satisfying A(x) = A( x^2*(1+x)^3 ) / x.at n=14A369553