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 A098204 #13 May 10 2024 03:37:08 %S A098204 1,2,4,8,16,96,64,864,72,1536,252,69120,4096,86400,4608,256,768,24576, %T A098204 65536,570240,217728,691200,81920,1105920,262144,245760,516096, %U A098204 9676800,26544672,50181120,1741824,2145024,226437120,103028889600,12597120 %N A098204 Greatest common divisor of multiperfect numbers and their totient. %H A098204 Amiram Eldar, <a href="/A098204/b098204.txt">Table of n, a(n) for n = 1..730</a> %F A098204 a(n) = gcd( A007691(n), A000010(A007691(n)) ). %F A098204 a(n) = A009195(A007691(n)). - _Amiram Eldar_, May 10 2024 %Y A098204 Cf. A000010, A007691, A009195, A098203. %K A098204 nonn %O A098204 1,2 %A A098204 _Labos Elemer_, Sep 23 2004 %E A098204 More terms from _Michel Marcus_, Sep 19 2013