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 A347378 #9 Oct 16 2021 15:43:12 %S A347378 0,1,2,5,2,9,4,13,16,17,2,21,4,25,20,29,2,33,4,37,34,41,6,45,24,49,38, %T A347378 53,2,57,6,61,52,65,42,69,4,73,56,77,2,81,4,85,70,89,6,93,72,97,74, %U A347378 101,6,105,36,109,88,113,2,117,6,121,92,125,54,129,4,133,106,137,2,141,6,145,110,149,66,153,4,157,124 %N A347378 a(n) = A250469(n) - n. %H A347378 Antti Karttunen, <a href="/A347378/b347378.txt">Table of n, a(n) for n = 1..10000</a> %H A347378 <a href="/index/Si#sieve">Index entries for sequences generated by sieves</a> %F A347378 a(n) = A250469(n) - n. %F A347378 a(n) = n - A346476(n). %F A347378 a(n) = A336853(n) - A280692(n). %F A347378 For all n >= 1, a(A000040(n)) = A001223(n). %o A347378 (PARI) A347378(n) = (A250469(n)-n); %Y A347378 Cf. A000040, A001223, A250469, A280692, A336853, A346476. %K A347378 nonn %O A347378 1,3 %A A347378 _Antti Karttunen_, Sep 01 2021