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).

A229276

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) =66a(4) =145a(5) =231a(6) =435a(7) =1221a(8) =11571a(9) =99093a(10) =105502a(11) =292434a(12) =449854a(13) =585429a(14) =643858a(15) =968014a(16) =1372494a(17) =1787091a(18) =1939434a(19) =4659114a(20) =5524014a(21) =5654334a(22) =6250371a(23) =6974007a(24) =19495374a(25) =19821714a(26) =28488039a(27) =34701369a(28) =46183893a(29) =81133734

External references