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 A072002 #26 Nov 14 2019 09:37:44 %S A072002 3,5,7,19,257,599479,649657 %N A072002 Highest prime dividing the least n-multiperfect number (A007539). %C A072002 a(9) may be 16148168401 but this has not been proved. - _Charles R Greathouse IV_, May 02 2013 %H A072002 A. Flammenkamp, <a href="http://wwwhomes.uni-bielefeld.de/achim/mpn.html">The Multiply Perfect Number Page</a> %H A072002 R. M. Sorli, <a href="http://www-staff.maths.uts.au/~rons/mpfn/mpfn.htm">Multiply perfect numbers</a> [Broken link] %H A072002 R. M. Sorli, <a href="http://hdl.handle.net/10453/20034">Algorithms in the Study of Multiperfect and Odd Perfect Numbers</a>, University of Technology, Sydney, 2003. %H A072002 Wikipedia, <a href="https://en.wikipedia.org/wiki/Multiply_perfect_number">Multiply perfect number</a> %Y A072002 Cf. A007539, A007691. %K A072002 nonn,hard,more %O A072002 2,1 %A A072002 _Lekraj Beedassy_, Jun 18 2002 %E A072002 a(8) from _Sean A. Irvine_, Sep 06 2012