Let sigma_m (n) be result of applying sum-of-divisors function m times to n; call n (m,k)-perfect if sigma_m (n) = k*n; sequence gives the (2,10)-perfect numbers.

A019287

Let sigma_m (n) be result of applying sum-of-divisors function m times to n; call n (m,k)-perfect if sigma_m (n) = k*n; sequence gives the (2,10)-perfect numbers.

Terms

    a(0) =480a(1) =504a(2) =13824a(3) =32256a(4) =32736a(5) =1980342a(6) =1396617984a(7) =3258775296a(8) =14763499520a(9) =38385098752

External references