Numbers k such that phi(k) = phi'(k'), where phi(k) is the Euler totient function of k and k' is the arithmetic derivative of k.

A260962

Numbers k such that phi(k) = phi'(k'), where phi(k) is the Euler totient function of k and k' is the arithmetic derivative of k.

Terms

    a(0) =8a(1) =26a(2) =122a(3) =351a(4) =31195a(5) =47201a(6) =51243a(7) =118265a(8) =300985a(9) =472491a(10) =672147a(11) =673863a(12) =850969a(13) =931383a(14) =1440625a(15) =3000927a(16) =3669213a(17) =3740755a(18) =4688645a(19) =4822143a(20) =4864175a(21) =11224565a(22) =13897079a(23) =13949343a(24) =16362857a(25) =16744355a(26) =18844265a(27) =19536205a(28) =35580099a(29) =38656975

External references