Primes of the form: 1 + sigma(n) + sigma(n)^2 + sigma(n)^3 + sigma(n)^4 + sigma(n)^5 + sigma(n)^6.

A259253

Primes of the form: 1 + sigma(n) + sigma(n)^2 + sigma(n)^3 + sigma(n)^4 + sigma(n)^5 + sigma(n)^6.

Terms

    a(0) =7a(1) =1093a(2) =55987a(3) =5229043a(4) =8108731a(5) =917087137a(6) =47446779661a(7) =917087137a(8) =4201025641a(9) =31401724537a(10) =141276239497a(11) =3092313043a(12) =47446779661a(13) =31401724537a(14) =141276239497a(15) =654022685443a(16) =141276239497a(17) =141276239497a(18) =265462278481a(19) =47446779661a(20) =100343116693

External references