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 A330412 #8 Feb 24 2020 04:24:32 %S A330412 34,568,147328,603971584,9663643648,39582416502784, %T A330412 696341272098017608537735168,765635325572111542783369494684623699968, %U A330412 3615610599582728119969414707766982030374842621310535527825408,3791242500068058721125048996612134914443116117566314438843154038784 %N A330412 Integers m such that sigma(m) + sigma(8*m) = 18*m. %C A330412 This is the case h = 8 of the h-perfect numbers as defined in the Harborth link. %H A330412 Heiko Harborth, <a href="http://ami.ektf.hu/uploads/papers/finalpdf/AMI_41_from57to62.pdf">On h-perfect numbers</a>, Annales Mathematicae et Informaticae, 41 (2013) pp. 57-62. %F A330412 a(n) = 2^A002236(n) * A050524(n). %e A330412 34 is a term since sigma(34) + sigma(8*34) = 612, that is 18*34. %o A330412 (PARI) isok(m) = sigma(m) + sigma(8*m) == 18*m; %Y A330412 Cf. A000203, A000396, A002236, A050524, A136539, A281993, A330413. %K A330412 nonn %O A330412 1,1 %A A330412 _Jinyuan Wang_, Feb 12 2020