A055196 - OEIS

%I #11 Aug 14 2021 07:55:45

%S 6,28,40,117,135,496,775,891,1701,2176,5632,6875,8128,18688,23552,

%T 26624,44375,88723,89667,91136,274625,352256,557375,628849,722701,

%U 796797,1071875,1200663,1288625,1358127,1512875,2246503,2473984,2490368,2896363,2909375

%N Primitive numbers k that divide sigma(k)*phi(k).

%C Terms from A011775 that are not a multiple of a previous term. - _Michel Marcus_, Dec 21 2013

%H Michel Marcus, <a href="/A055196/b055196.txt">Table of n, a(n) for n = 1..68</a>

%Y Cf. A011775.

%K easy,nonn

%O 1,1

%A _Robert G. Wilson v_, Jun 30 2000

%E Extended using A011775 b-file by _Michel Marcus_, Dec 21 2013