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 A340196 #8 Apr 26 2021 14:39:08
%S A340196 0,0,0,1,0,1,0,4,4,3,0,5,0,5,6,11,0,10,0,11,8,9,0,15,16,11,20,15,0,17,
%T A340196 0,26,16,15,22,25,0,17,22,29,0,25,0,29,30,21,0,37,36,38,30,33,0,43,38,
%U A340196 41,32,27,0,43,0,29,46,57,32,41,0,47,40,51,0,58,0,35,60,51,56,57,0,67,72,39,0,61,60,41,54,71,0,69
%N A340196 a(n) = n - A340195(n).
%H A340196 Antti Karttunen, <a href="/A340196/b340196.txt">Table of n, a(n) for n = 1..65537</a>
%F A340196 a(n) = Sum_{d|n} A318830(d).
%o A340196 (PARI)
%o A340196 A049559(n) = gcd(eulerphi(n), n-1);
%o A340196 A318830(n) = (eulerphi(n)-A049559(n));
%o A340196 A340196(n) = sumdiv(n,d,A318830(d));
%Y A340196 Inverse Möbius transform of A318830.
%Y A340196 Cf. A000010, A049559, A340195.
%Y A340196 Cf. also A340193.
%K A340196 nonn
%O A340196 1,8
%A A340196 _Antti Karttunen_, Jan 02 2021