This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
%I A034760 #13 May 07 2021 00:53:06
%S A034760 1,3,5,9,11,20,19,30,31,42,39,66,49,72,77,90,69,124,79,140,127,132,
%T A034760 101,208,137,170,175,224,135,292,143,260,239,238,257,396,187,272,297,
%U A034760 428,213,478,223,412,445,342,245,604,343,496,415,512,291,636,477,674,475
%N A034760 Dirichlet convolution of primes (with 1) with phi(n).
%F A034760 From _Richard L. Ollerton_, May 06 2021: (Start)
%F A034760 a(n) = Sum_{d|n} A000010(d)*A008578(n/d) (by definition).
%F A034760 a(n) = Sum_{k=1..n} A008578(gcd(n,k)).
%F A034760 a(n) = Sum_{k=1..n} A008578(n/gcd(n,k))*A000010(gcd(n,k))A000010(n/gcd(n,k)). (End)
%o A034760 (PARI) pbc(n) = if (n==1, 1, prime(n-1));
%o A034760 a(n) = sumdiv(n, d, pbc(d)*eulerphi(n/d)); \\ _Michel Marcus_, Feb 28 2019
%Y A034760 Cf. A000010, A008578.
%K A034760 nonn
%O A034760 1,2
%A A034760 _Erich Friedman_