Odd numbers whose arithmetic derivative (A003415) is equal to Dedekind psi (A001615) applied to the same number.

A345005

Odd numbers whose arithmetic derivative (A003415) is equal to Dedekind psi (A001615) applied to the same number.

Terms

    a(0) =81a(1) =3375a(2) =15625a(3) =231525a(4) =713097a(5) =1058841a(6) =1500625a(7) =4348377a(8) =5764801a(9) =16891497a(10) =163555875a(11) =209548647a(12) =239010993a(13) =239160735a(14) =254205875a(15) =267651475a(16) =405189675a(17) =451699875a(18) =958403475a(19) =1050284375a(20) =1213014231a(21) =1501534375a(22) =1695809375a(23) =1809323971a(24) =1942143291a(25) =2215505331

External references