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 A349399 #10 Nov 25 2021 20:33:36
%S A349399 2,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
%T A349399 0,1,0,0,0,0,0,-10,0,0,0,0,0,16,25,0,0,0,0,0,0,-80,0,0,0,-12,0,0,0,64,
%U A349399 0,-6,0,0,0,60,0,4,0,0,0,0,30,0,0,-96,0,0,0,18,0,0,0,-48,0,-10,0,0,0,0,0,24,0,-190
%N A349399 a(n) = A349397(n) + A349398(n).
%H A349399 Antti Karttunen, <a href="/A349399/b349399.txt">Table of n, a(n) for n = 1..16384</a>
%H A349399 <a href="/index/Pri#prime_indices">Index entries for sequences computed from indices in prime factorization</a>
%F A349399 a(1) = 2, and for n > 1, a(n) = -Sum_{d|n, 1<d<n} A349397(d) * A349398(n/d). [As the sequences are Dirichlet inverses of each other]
%o A349399 (PARI) A349399(n) = (A349397(n) + A349398(n)); \\ Needs also code from A349397 and A349398.
%Y A349399 Cf. A048673, A064216, A349397, A349398.
%K A349399 sign
%O A349399 1,1
%A A349399 _Antti Karttunen_, Nov 19 2021