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 A085009 #7 Mar 30 2012 18:39:18
%S A085009 2,0,5,8,9,8,5,0,2,2,0,5,8,9,17,23,27,29,29,27,32,35,36,35,32,27,29,
%T A085009 29,27,23,17,9,8,5,0,2,2,0,5,8,9,8,5,0,2,2,0,5,8,9,17,23,27,29,29,27,
%U A085009 32,35,36,44,50,54,65,74,81,86,89,90,98,104,108,110,110,108,113,116,117,116
%N A085009 "Von Koch" sequence generated by {1,1,2}.
%C A085009 The graph of the sequence is similar to, for example, A071992
%F A085009 a(n)= n+2 + sum(k=1, n, A085008(k))
%Y A085009 Cf. A085006, A085007, A085009, A005536 ("Von Koch" sequence generated by {1, 2}).
%K A085009 nonn
%O A085009 1,1
%A A085009 _Benoit Cloitre_, Jun 17 2003