A133797 - OEIS

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A133797

Apply the map n -> sigma(phi(n)) to A023758.

%I #5 Oct 13 2021 15:03:30

%S 0,1,1,3,3,3,12,7,7,12,15,15,15,28,15,72,31,31,60,31,72,91,63,63,124,

%T 63,168,91,312,127,127,252,127,360,195,312,255,255,255,508,255,744,

%U 403,728,255,1240,511,511,1020,511,1512,819,1560,511,1240,1860

%N Apply the map n -> sigma(phi(n)) to A023758.

%Y Cf. A023758, A062402.

%K nonn

%O 1,4

%A _J. H. Conway_, Jan 05 2008