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 A091587 #17 Aug 05 2018 12:07:23 %S A091587 1,3,9,24,67,196,581,1731,5180,15534,46578,139713,419116 %N A091587 Records in A091579. %C A091587 Each term is roughly 3 times the previous term. %H A091587 F. J. van de Bult, D. C. Gijswijt, J. P. Linderman, N. J. A. Sloane and Allan Wilks, <a href="https://cs.uwaterloo.ca/journals/JIS/VOL10/Sloane/sloane55.html">A Slow-Growing Sequence Defined by an Unusual Recurrence</a>, J. Integer Sequences, Vol. 10 (2007), #07.1.2. %H A091587 F. J. van de Bult, D. C. Gijswijt, J. P. Linderman, N. J. A. Sloane and Allan Wilks, A Slow-Growing Sequence Defined by an Unusual Recurrence [<a href="http://neilsloane.com/doc/gijs.pdf">pdf</a>, <a href="http://neilsloane.com/doc/gijs.ps">ps</a>]. %H A091587 <a href="/index/Ge#Gijswijt">Index entries for sequences related to Gijswijt's sequence</a> %Y A091587 Cf. A090822, A091579. A091588 is a smoothed version. %K A091587 nonn,more %O A091587 0,2 %A A091587 _N. J. A. Sloane_, Mar 05 2004 %E A091587 a(10)-a(12) from _John P. Linderman_, May 30 2004