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 A092788 #8 Sep 04 2018 12:06:52 %S A092788 1,1,1,1,1,2,2,1,2,1,2,2,2,2,2,2 %N A092788 USUP perfect numbers. %C A092788 USUP stands for UnitarySigmaUnitaryPhi(n) = A109712(n). %F A092788 a(n) = m/A109712(m) where m = A092760(n). - _R. J. Mathar_, Sep 04 2018 %Y A092788 Cf. A092760. %K A092788 nonn %O A092788 1,6 %A A092788 _Yasutoshi Kohmoto_, Apr 14 2004 %E A092788 Adapted to match A092760. - _R. J. Mathar_, Sep 04 2018