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 A066952 #9 Dec 10 2014 02:07:20 %S A066952 1,2,4,16,100,324 %N A066952 Smallest m such that A072410(m) = n. %C A066952 The old entry with this sequence number was a duplicate of A007875. %H A066952 John H. Conway, Heiko Dietrich and E. A. O'Brien, <a href="http://www.math.auckland.ac.nz/~obrien/research/gnu.pdf">Counting groups: gnus, moas and other exotica</a>. %Y A066952 Cf. A000001, A072410. %K A066952 nonn,more %O A066952 0,2 %A A066952 _N. J. A. Sloane_, Oct 03 2008 %E A066952 a(5) from _Eric M. Schmidt_, Dec 09 2014