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 A056030 #17 Aug 05 2025 00:15:33
%S A056030 0,8,3,1,9,3,110,1,7,1,10,4,2,10,1,3,1,1,10,2,5,8,1,9,8,1,997,1,109,8,
%T A056030 1,111,4,9,2,2,1,1,1,1,2,1,53,1,3,1,6,5,1,1,3,1,4,3,1,1,6,1,1,59,2,1,
%U A056030 1,1,8,2,9,11,5,6,33,1,1,3,2,6,9,3,2,20,1,7,1,27,1,20,5,1,229,1,2,12,6
%N A056030 Continued fraction for 0.12112111211112... .
%H A056030 Harry J. Smith, <a href="/A056030/b056030.txt">Table of n, a(n) for n = 1..20000</a> [corrected by _Kevin Ryde_, Aug 04 2025]
%H A056030 G. Xiao, <a href="http://wims.unice.fr/~wims/en_tool~number~contfrac.en.html">Contfrac</a>
%H A056030 <a href="/index/Con#confC">Index entries for continued fractions for constants</a>
%e A056030 0.121121112111121111121111112... = 0 + 1/(8 + 1/(3 + 1/(1 + 1/(9 + ...)))). - _Harry J. Smith_, May 08 2009
%t A056030 ContinuedFraction[N[1/9,1000]+N[Sum[10^-(n(n+3)/2),{n,1,50}],1000],100]
%Y A056030 Cf. A042974.
%K A056030 easy,nonn,cofr
%O A056030 1,2
%A A056030 _Robert G. Wilson v_, Jul 24 2000