Composite squarefree numbers n such that p-tau(n) divides n-sigma(n), where p are the prime factors of n, tau(n) = A000005(n) and sigma(n) = A000203(n).

A229273

Composite squarefree numbers n such that p-tau(n) divides n-sigma(n), where p are the prime factors of n, tau(n) = A000005(n) and sigma(n) = A000203(n).

Terms

    a(0) =6a(1) =10a(2) =15a(3) =22a(4) =78a(5) =138a(6) =273a(7) =483a(8) =3243a(9) =3913a(10) =104377a(11) =477337a(12) =1537627a(13) =1904487a(14) =2508961a(15) =3326829a(16) =3716167a(17) =5148949a(18) =6154017a(19) =6686113a(20) =11521842a(21) =14355679a(22) =16872583a(23) =25165777a(24) =28029883a(25) =31232337a(26) =32403342a(27) =50725419a(28) =57396469a(29) =68815381

External references