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 A034916 #25 Dec 01 2019 21:30:42 %S A034916 4660241041,7220722321,12994506001,52929885457,60771359377 %N A034916 31752-hyperperfect numbers: n = 31752*(sigma(n)-n-1) + 1. %C A034916 No other terms below 10^19. - _Max Alekseyev_, Dec 01 2019 %H A034916 J. S. McCranie, <a href="https://cs.uwaterloo.ca/journals/JIS/VOL3/mccranie.html">A study of hyperperfect numbers</a>, J. Int. Seqs. Vol. 3 (2000) #P00.1.3. %Y A034916 Cf. A000396, A007593, A220290, A028499-A028502. %K A034916 hard,more,nonn %O A034916 1,1 %A A034916 _Jud McCranie_