Numbers k such that psi(phi(k))/k > psi(phi(m))/m for all m < k, where phi is Euler's totient function (A000010) and psi is the Dedekind psi function (A001615).
A293712
Numbers k such that psi(phi(k))/k > psi(phi(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) =5a(2) =7a(3) =13a(4) =19a(5) =31a(6) =61a(7) =151a(8) =181a(9) =211a(10) =421a(11) =631a(12) =1051a(13) =1471a(14) =2311a(15) =4621a(16) =9241a(17) =11551a(18) =18481a(19) =25411a(20) =32341a(21) =34651a(22) =43891a(23) =60653a(24) =120121a(25) =150151a(26) =180181a(27) =270271a(28) =300301a(29) =330331
External references
- oeis: A293712