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 A101469 #1 Feb 20 2005 03:00:00 %S A101469 0,0,0,0,0,0,1260,57120 %N A101469 Erroneous version of A058832. %C A101469 These numbers should have been halved. %D A101469 R. C. Read and N. C. Wormald, Number of labeled 4-regular graphs, J. Graph Theory, 4 (1980), 203-212. %K A101469 dead %O A101469 0,7