Let sigma*_m (n) be result of applying sum of anti-divisors m times to n; call n (m,k)-anti-perfect if sigma*_m (n) = k*n; sequence gives the (3,k)-anti-perfect numbers.

A229861

Let sigma*_m (n) be result of applying sum of anti-divisors m times to n; call n (m,k)-anti-perfect if sigma*_m (n) = k*n; sequence gives the (3,k)-anti-perfect numbers.

Terms

    a(0) =4a(1) =5a(2) =8a(3) =32a(4) =41a(5) =54a(6) =56a(7) =68a(8) =123a(9) =946a(10) =1494a(11) =1856a(12) =2056a(13) =5186a(14) =6874a(15) =8104a(16) =10419a(17) =17386a(18) =27024a(19) =31100a(20) =84026a(21) =167786a(22) =272089a(23) =733253a(24) =812600a(25) =1188000a(26) =1544579a(27) =2667584a(28) =4921776a(29) =16360708

External references