Squarefree k such that phi(k)/k - 1/2 is positive and minimal for k with gpf(k) = prime(n).
A325236
Squarefree k such that phi(k)/k - 1/2 is positive and minimal for k with gpf(k) = prime(n).
Terms
- a(0) =1a(1) =2a(2) =3a(3) =15a(4) =21a(5) =231a(6) =273a(7) =255a(8) =285a(9) =167739a(10) =56751695a(11) =7599867a(12) =3829070245a(13) =567641679a(14) =510795753a(15) =39169969059a(16) =704463969a(18) =42917990271a(19) =547701649495
External references
- oeis: A325236