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 A069951 #9 Mar 17 2015 23:06:17 %S A069951 1,1,18,7,1,1,10,54,16,1,1,19,90,25,1,1,28,126,34,1,1,37,162,43,1,1, %T A069951 46,198,52,1,1,55,234,61,1,1,64,270,70,1,1,73,306,79,1,1,82,342,88,1, %U A069951 1,91,378,97,1,1,100,414,106,1,1,109,450,115,1,1,118,486,124,1,1,127,522 %N A069951 Continued fraction expansion of the number e^(2/3). %C A069951 e^(2/3) = 1.9477340410546758566390... %H A069951 G. Xiao, <a href="http://wims.unice.fr/~wims/en_tool~number~contfrac.en.html">Contfrac</a> %H A069951 K. Matthews, <a href="http://www.numbertheory.org/php/davison.html">Finding the continued fraction of e^(l/m)</a> %F A069951 If k>0 a(5k)=a(5k+1)=1, a(5k+2)=9k+1, a(5k+3)=36k+18, a(5k+4)=9k+7. - _Benoit Cloitre_, May 04 2002 %t A069951 ContinuedFraction[ E^(2/3), 100] %K A069951 nonn,cofr,easy %O A069951 0,3 %A A069951 Elena Andres Sierra (aeroplane27(AT)hotmail.com), Apr 27 2002 %E A069951 Edited and extended by _Robert G. Wilson v_ and _Benoit Cloitre_, May 04 2002