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).
A229275
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) =10778a(1) =16471a(2) =17353a(3) =439453a(4) =1304443a(5) =3719678a(6) =9234253a(7) =17270678a(8) =20512335a(9) =21179143a(10) =50706307a(11) =77292313a(12) =95506557a(13) =103081993a(14) =104707029a(15) =140419077a(16) =240626953a(17) =287947933a(18) =822767689a(19) =982374757a(20) =1608154233a(21) =1918313911a(22) =2219891947a(23) =2471777007a(24) =2632397677
External references
- oeis: A229275