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 A349383 #11 Nov 26 2021 21:07:35 %S A349383 2,0,0,4,0,12,0,16,9,16,0,24,0,24,24,52,0,42,0,32,36,24,0,60,16,24,63, %T A349383 48,0,0,0,160,36,24,48,102,0,24,36,80,0,0,0,48,84,40,0,168,36,80,36, %U A349383 48,0,174,48,120,36,32,0,48,0,32,126,484,48,0,0,48,60,0,0,282,0,40,120,48,72,0,0,224,351,24,0,72,48 %N A349383 a(n) = A349381(n) + A349382(n). %H A349383 Antti Karttunen, <a href="/A349383/b349383.txt">Table of n, a(n) for n = 1..20000</a> %H A349383 <a href="/index/Pri#prime_indices">Index entries for sequences computed from indices in prime factorization</a> %F A349383 a(1) = 2, and for n > 1, a(n) = -Sum_{d|n, 1<d<n} A349381(d)*A349382(n/d). [As the sequences are Dirichlet inverses of each other] %o A349383 (PARI) A349383(n) = (A349381(n)+A349382(n)); \\ Needs also code from A349381 and A349382. %Y A349383 Cf. A003961, A064989, A349381, A349382. %Y A349383 Cf. also A349357. %K A349383 nonn %O A349383 1,1 %A A349383 _Antti Karttunen_, Nov 17 2021