a(n) = smallest m such that sigma(m) = n*m/2.

A317681

a(n) = smallest m such that sigma(m) = n*m/2.

Terms

    a(0) =1a(1) =2a(2) =6a(3) =24a(4) =120a(5) =4320a(6) =30240a(7) =8910720a(8) =14182439040

External references