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 A049487 #3 Jun 29 2008 03:00:00 %S A049487 0,2,38,13,1674,790526 %N A049487 Number of maximal-length non-crossing paths on n X n square lattice. %Y A049487 Cf. A049486. %K A049487 nonn,walk,nice,hard %O A049487 1,2 %A A049487 Arlin Anderson (starship1(AT)gmail.com)