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 A324046 #6 Feb 14 2019 07:47:03 %S A324046 1,1,1,1,1,6,1,2,1,2,1,4,1,2,3,2,1,6,1,4,1,2,1,12,1,2,1,28,1,6,1,1,3, %T A324046 2,1,3,1,2,1,10,1,6,1,4,9,2,1,12,1,1,3,2,1,18,1,8,1,2,1,12,1,2,3,1,1, %U A324046 6,1,2,3,2,1,12,1,2,3,4,1,6,1,8,3,2,1,28,1,2,3,4,1,18,7,4,1,2,5,48,1,1,9,4,1,6,1,2,3 %N A324046 a(n) = gcd(n, A106316(n)). %H A324046 Antti Karttunen, <a href="/A324046/b324046.txt">Table of n, a(n) for n = 1..20000</a> %F A324046 a(n) = gcd(n, A106316(n)). %o A324046 (PARI) %o A324046 A106315(n) = (n*numdiv(n) % sigma(n)); %o A324046 A106316(n) = (A106315(n) % n); %o A324046 A324046(n) = gcd(n,A106316(n)); %Y A324046 Cf. A000005, A000203, A106315, A106316, A324045, A324047. %K A324046 nonn %O A324046 1,6 %A A324046 _Antti Karttunen_, Feb 13 2019