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 A105473 #3 Mar 31 2012 13:46:51 %S A105473 8,1,2,3,4,5,6,7,9,1,4,2,5,6,3,7,8,9,4,1,2,3,6,5,7,8,9,1,2,6,3,4,5,7, %T A105473 8,9,7,1,2,3,4,5,6,8,9,1,2,3,4,5,6,7,8,9,1,3,4,5,6,7,8,2,9,1,5,2,3,4, %U A105473 7,8,6,9,1,2,4,5,6,3,7,8,9,7,1,2,3,4,5,6,9,8,1,2,3,4,5,6,7,8,9,1,2,3,4,5,6 %N A105473 First "Fractal Jump Sequence" (FJS) having its first nine digits different one from another, then the next nine, then the next nine, etc. %C A105473 See A105397 for definition of Fractal Jump Sequence. %K A105473 base,easy,nonn %O A105473 8,1 %A A105473 _Eric Angelini_, May 02 2005