Numbers k such that phi(k + 5) | sigma(k) + 5.
A015871
Numbers k such that phi(k + 5) | sigma(k) + 5.
Terms
- a(0) =1a(1) =4a(2) =9a(3) =16a(4) =18a(5) =64a(6) =81a(7) =729a(8) =4096a(9) =59049a(10) =125316a(11) =262144a(12) =16777216
External references
- oeis: A015871