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 A132175 #9 Mar 30 2012 16:50:43 %S A132175 4,9,20,43,91,188,384,777,1564,3140,6293,12601,25218,50453,100925, %T A132175 201870,403762,807547 %N A132175 Index of end of n-th generation of terms in A063882. %H A132175 B. Balamohan, A. Kuznetsov and S. Tanny, <a href="http://www.cs.uwaterloo.ca/journals/JIS/VOL10/Tanny/tanny3.html">On the behavior of a variant of Hofstadter's Q-sequence</a>, J. Integer Sequences, Vol. 10 (2007), #07.7.1. %H A132175 <a href="/index/Ho#Hofstadter">Index entries for Hofstadter-type sequences</a> %K A132175 nonn %O A132175 1,1 %A A132175 _N. J. A. Sloane_, Nov 07 2007