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 A305791 #5 Jun 13 2018 09:12:28
%S A305791 1,2,2,5,2,6,2,8,7,10,2,12,2,6,8,16,2,14,2,16,8,10,2,20,7,10,16,20,2,
%T A305791 22,2,20,8,10,12,36,2,6,8,32,2,18,2,16,18,10,2,32,7,22,12,24,2,30,8,
%U A305791 32,12,14,2,44,2,6,18,32,12,30,2,16,8,30,2,48,2,6,18,16,12,30,2,44,25,10,2,44,8,10,12,36,2,54,8,20,12,14,16,56,2
%N A305791 Dirichlet convolution of A175851 with itself.
%H A305791 Antti Karttunen, <a href="/A305791/b305791.txt">Table of n, a(n) for n = 1..65537</a>
%F A305791 a(n) = Sum_{d|n} A175851(d)*A175851(n/d).
%o A305791 (PARI)
%o A305791 A175851(n) = if(1==n,n,1 + n - precprime(n));
%o A305791 A305791(n) = sumdiv(n,d,A175851(d)*A175851(n/d));
%Y A305791 Cf. A175851.
%Y A305791 Cf. also A305796, A305797, A305798, A305799.
%K A305791 nonn
%O A305791 1,2
%A A305791 _Antti Karttunen_, Jun 13 2018