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 A330413 #7 Feb 24 2020 04:25:00 %S A330413 268,4336,69568,73014378496,18691696623616,80280230208715249156096, %T A330413 5516815412193254337299253840314368, %U A330413 22596875928343569838211798520159010816,106710729501573572985208420194451100911225778218295042768896,7689318425915528602346510723233181380859942271270135051778769275060995751936 %N A330413 Integers m such that sigma(m) + sigma(16*m) = 34*m. %C A330413 This is the case h = 16 of the h-perfect numbers as defined in the Harborth link. %H A330413 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 A330413 a(n) = 2^A001774(n) * (17*2^A001774(n) - 1). %e A330413 268 is a term since sigma(268) + sigma(16*268) = 9112, that is 34*268. %o A330413 (PARI) isok(m) = sigma(m) + sigma(16*m) == 34*m; %Y A330413 Cf. A000203, A000396, A001774, A136539, A281993, A330412. %K A330413 nonn %O A330413 1,1 %A A330413 _Jinyuan Wang_, Feb 12 2020