137682944

Appears in sequences

• Number of labeled marked trees with n nodes.at n=6A136797
• a(n) = numerator(Integral_{(x,y,z) in R^3 : 0 <= x^2 + y^2 + z^2 <= n^2} (x^2 + y^2) dx dy dz)/Pi.at n=28A387611