Trajectory of 28 under the map k -> A003415(k) (taking the arithmetic derivative).

A090637

Trajectory of 28 under the map k -> A003415(k) (taking the arithmetic derivative).

Terms

    a(0) =28a(1) =32a(2) =80a(3) =176a(4) =368a(5) =752a(6) =1520a(7) =3424a(8) =8592a(9) =20096a(10) =70464a(11) =235072a(12) =705280a(13) =3023616a(14) =13223680a(15) =55540736a(16) =278539264a(17) =1392697344a(18) =9541095424a(19) =58609614848a(20) =410267320320

External references