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 A091413 #13 Aug 05 2018 12:00:35 %S A091413 0,1,2,4,5,6,8,10,12,15,16,17,19,20,21,23,25,27,30,32,33,34,36,37,38, %T A091413 40,42,44,47,48,49,51,52,53,55,57,59,62,64,66,68,71,73,75,77,80,83,85, %U A091413 86,87,89,90,91,93,95,97,100,101,102,104,105,106,108,110,112,115,117,118,119,121 %N A091413 Partial sums of A090822. %H A091413 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 A091413 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 A091413 <a href="/index/Ge#Gijswijt">Index entries for sequences related to Gijswijt's sequence</a> %K A091413 nonn %O A091413 0,3 %A A091413 _N. J. A. Sloane_, Mar 04 2004