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 A295314 #9 Nov 23 2017 12:28:33 %S A295314 1,3,2,7,3,3,2,15,13,3,3,7,7,3,3,31,3,13,5,7,2,3,3,15,31,7,5,7,15,3,2, %T A295314 7,3,3,3,91,19,15,7,15,7,3,11,7,13,3,3,31,19,31,3,7,3,15,3,15,5,15,15, %U A295314 7,31,3,13,127,7,3,17,7,3,3,3,65,37,19,31,35,3,7,5,31,11,7,7,7,3,33,15,15,15,13,7,7,2,3 %N A295314 a(n) = sigma(n) / gcd(sigma(n), phi(sigma(n))). %H A295314 Antti Karttunen, <a href="/A295314/b295314.txt">Table of n, a(n) for n = 1..16384</a> %F A295314 a(n) = A000203(n) / A295313(n) = A109395(A000203(n)). %o A295314 (PARI) a(n) = my(sn = sigma(n)); sn/gcd(sn, eulerphi(sn)); \\ _Michel Marcus_, Nov 23 2017 %Y A295314 Cf. A000010, A000203, A009195, A109395, A295313, A295315. %K A295314 nonn %O A295314 1,2 %A A295314 _Antti Karttunen_, Nov 22 2017