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 A039749 #2 May 16 2003 03:00:00 %S A039749 1,1,3,9,32 %N A039749 Erroneous version of A001930. %D A039749 F. Harary and E. M. Palmer, Graphical Enumeration, Academic Press, NY, 1973, p. 218. %K A039749 dead %O A039749 0,3