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Moebius transform of {1, primes}.
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%I #18 Feb 28 2019 11:53:23

%S 1,1,2,3,6,7,12,12,16,15,28,17,36,27,34,30,52,32,60,41,56,43,78,40,82,

%T 59,82,59,106,43,112,80,100,83,120,70,150,95,124,88,172,73,180,115,

%U 134,117,198,98,210,122,174,133,238,100,216,142,200,161,270,107,280,169,206,180

%N Moebius transform of {1, primes}.

%H N. J. A. Sloane, <a href="/transforms.txt">Transforms</a>

%o (PARI) a(n) = sumdiv(n, d, if (d==1, 1, prime(d-1))*moebius(n/d)); \\ _Michel Marcus_, Nov 04 2018

%Y Cf. A008578 ({1, primes}), A007444 (Moebius transform of primes), A008683.

%K nonn

%O 1,3

%A _N. J. A. Sloane_

%E Offset 1 and more terms from _Michel Marcus_, Nov 04 2018