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 A344766 #8 May 31 2021 21:24:33 %S A344766 1,3,2,7,2,3,2,15,1,2,2,4,2,1,1,31,2,1,2,3,2,1,2,15,1,6,2,7,2,3,2,63, %T A344766 1,2,2,1,2,1,4,15,2,4,2,4,3,1,2,4,3,3,1,1,2,3,2,24,2,2,2,3,2,1,1,127, %U A344766 1,1,2,2,1,4,2,3,2,6,4,28,3,12,2,2,1,2,2,16,2,1,1,4,2,1,1,1,2,1,1,63,2,3,4,1,2,3,2,2,2 %N A344766 a(n) = gcd(sigma(n), A011772(n)). %H A344766 Antti Karttunen, <a href="/A344766/b344766.txt">Table of n, a(n) for n = 1..65537</a> %H A344766 <a href="/index/Si#SIGMAN">Index entries for sequences related to sigma(n)</a> %F A344766 a(n) = gcd(A000203(n), A011772(n)). %F A344766 a(n) = gcd(A000203(n), A344765(n)) = gcd(A011772(n), A344765(n)). %o A344766 (PARI) A344766(n) = gcd(sigma(n), A011772(n)); %Y A344766 Cf. A000203, A011772, A344765. %Y A344766 Cf. also A344764. %K A344766 nonn %O A344766 1,2 %A A344766 _Antti Karttunen_, May 30 2021