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 A083038 #8 Mar 30 2012 18:39:18 %S A083038 1,1,0,0,1,1,2,4,5,5,6,6,5,5,6,6,5,5,4,2,1,1,0,0,1,1,0,0,1,1,2,4,5,5, %T A083038 6,6,5,5,6,6,7,9,10,10,11,13,14,16,19,21,22,24,25,25,26,28,29,29,30, %U A083038 30,29,29,30,30,31,33,34,34,35,35,34,34,35,35,34,34,33,31,30,30,29,29,30,30 %N A083038 A fractal sequence. %C A083038 Sequence presents fractal patterns. %H A083038 Boris Gourevitch, <a href="http://membres.lycos.fr/bgourevitch/temporaires/benoit/sqrt2fractal.jpg">Graph of a(n)</a>. %F A083038 a(n)=sum(k=1, n, A083037(k)) %F A083038 a(2*A001109(n)-1)=A001109(n) - _Benoit Cloitre_, Dec 12 2003 %Y A083038 Cf. A083035, A083036, A083037, A071992 (which presents similar fractal aspects). %K A083038 nonn %O A083038 1,7 %A A083038 _Benoit Cloitre_, Apr 17 2003