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 A091408 #13 Aug 05 2018 16:26:12 %S A091408 0,0,0,2,3,3,0,5,5,8,9,9,11,12,12,9,14,14,0,18,19,19,21,22,22,19,24, %T A091408 24,27,28,28,30,31,31,28,33,33,19,0,37,37,33,34,41,41,33,44,46,47,47, %U A091408 49,50,50,47,52,52,55,56,56,58,59,59,56,61,61,47,65,66,66,68,69 %N A091408 Values of len_x(n) for A090822. %H A091408 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 A091408 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 A091408 <a href="/index/Ge#Gijswijt">Index entries for sequences related to Gijswijt's sequence</a> %K A091408 nonn %O A091408 1,4 %A A091408 _N. J. A. Sloane_, Mar 04 2004