Numbers k such that phi(psi(k))/k < phi(psi(m))/m for all m < k, where phi is Euler's totient function (A000010) and psi is the Dedekind psi function (A001615).
A293713
Numbers k such that phi(psi(k))/k < phi(psi(m))/m for all m < k, where phi is Euler's totient function (A000010) and psi is the Dedekind psi function (A001615).
Terms
- a(0) =1a(1) =3a(2) =4a(3) =5a(4) =11a(5) =17a(6) =23a(7) =25a(8) =29a(9) =59a(10) =89a(11) =149a(12) =179a(13) =239a(14) =269a(15) =359a(16) =377a(17) =389a(18) =419a(19) =839a(20) =1049a(21) =1259a(22) =1889a(23) =2099a(24) =2309a(25) =9239a(26) =11549a(27) =13859a(28) =20789a(29) =23099
External references
- oeis: A293713