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 A246968 #8 Sep 09 2014 00:55:38 %S A246968 1,4,55,2008,153040,20987840,4672874360 %N A246968 Erroneous version of A001500. %D A246968 R. C. Read, Some Enumeration Problems in Graph Theory. Ph.D. Dissertation, Department of Mathematics, Univ. London, 1958. %H A246968 R. C. Read, <a href="/A002831/a002831.pdf">Letter to N. J. A. Sloane, Feb 04 1971</a> %Y A246968 Cf. A001500. %K A246968 dead %O A246968 1,2 %A A246968 _N. J. A. Sloane_, Sep 09 2014