Trajectory of 15 under the map k -> A003415(k) (taking the arithmetic derivative).

A090636

Trajectory of 15 under the map k -> A003415(k) (taking the arithmetic derivative).

Terms

    a(0) =15a(1) =8a(2) =12a(3) =16a(4) =32a(5) =80a(6) =176a(7) =368a(8) =752a(9) =1520a(10) =3424a(11) =8592a(12) =20096a(13) =70464a(14) =235072a(15) =705280a(16) =3023616a(17) =13223680a(18) =55540736a(19) =278539264a(20) =1392697344a(21) =9541095424a(22) =58609614848a(23) =410267320320

External references