Numbers k for which phi(sigma(k)) + A064989(sigma(k)) is equal to phi(k) + A064989(k).

A353746

Numbers k for which phi(sigma(k)) + A064989(sigma(k)) is equal to phi(k) + A064989(k).

Terms

    a(0) =1a(1) =114a(2) =618a(3) =2428a(4) =3868a(5) =11706a(6) =16012a(7) =23946a(8) =2031108a(9) =2938902a(10) =3531102a(11) =10475862a(12) =98250486a(13) =205600756

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