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 A349386 #10 Nov 26 2021 16:17:36
%S A349386 2,0,0,1,0,4,0,3,4,6,0,2,0,10,12,7,0,0,0,3,20,12,0,-4,9,16,16,5,0,-36,
%T A349386 0,15,24,18,30,-10,0,22,32,-6,0,-60,0,6,0,28,0,-20,25,-3,36,8,0,-20,
%U A349386 36,-10,44,30,0,-48,0,36,0,31,48,-72,0,9,56,-90,0,-32,0,40,-6,11,60,-96,0,-30,52,42,0,-80,54,46,60
%N A349386 a(n) = A349384(n) + A349385(n).
%H A349386 Antti Karttunen, <a href="/A349386/b349386.txt">Table of n, a(n) for n = 1..20000</a>
%H A349386 <a href="/index/Pri#prime_indices">Index entries for sequences computed from indices in prime factorization</a>
%F A349386 a(1) = 2, and for n > 1, a(n) = -Sum_{d|n, 1<d<n} A349384(d) * A349385(n/d). [As the sequences are Dirichlet inverses of each other]
%o A349386 (PARI) A349386(n) = (A349384(n)+A349385(n)); \\ Needs also code from A349384 and A349385.
%Y A349386 Cf. A003961, A048673, A349384, A349385.
%Y A349386 Cf. also A349383.
%K A349386 sign
%O A349386 1,1
%A A349386 _Antti Karttunen_, Nov 17 2021