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 A001199 M1699 N0670 #11 Jun 01 2010 03:00:00 %S A001199 1,1,2,6,32,353,8390,436399,50468754 %N A001199 Erroneous version of A056642. %D A001199 L. Comtet, Advanced Combinatorics, Reidel, 1974, p. 303, #42. %D A001199 N. J. A. Sloane, A Handbook of Integer Sequences, Academic Press, 1973 (includes this sequence). %D A001199 N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence). %K A001199 dead %O A001199 1,3