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 A171003 #6 Aug 02 2014 06:23:08 %S A171003 1,2,4,9,18,40,100,225,525,1225,3136,7056,17640,44100,108900,261360, %T A171003 637065,1656369,4008004,10020010,25050025,64128064,155739584, %U A171003 393853824,1012766976,2538950544,6347376360,15774544800,41408180100 %N A171003 A lower bound for A094837. %C A171003 See Perl script for explanation. %H A171003 John P. Linderman, <a href="/A171003/b171003.txt">Table of n, a(n) for n = 1..50</a> %H A171003 John P. Linderman, <a href="/A094837/a094837pl.txt">Perl script for a lower bound on A094837</a> %K A171003 nonn %O A171003 1,2 %A A171003 _John P. Linderman_, Sep 01 2010