10890936

Appears in sequences

• Numbers m such that phi(m) = rad(m)^4, where phi is the Euler totient function (A000010) and rad is the squarefree kernel function (A007947).at n=6A328275
• 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=21A387611