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 A119928 #4 Jul 10 2011 18:41:28
%S A119928 2,1,3,11,10,2,1,1,2,5,2,4,23,45,1,3,9,4,3,1,2,1,24,13,1,1,1,1,2,1,1,
%T A119928 1,1,2,3,1,2,51,2,7,2,1198400,1,3,2,10,1,11,13,1,2,1,4,1,10,3,13,1,1,
%U A119928 1,2,13,1,1,122,148,1,48,3,1,46,1,1,1,4,2,1,5,4,1,2,1,1,8,1,8,5,1,7,1,2,1,1
%N A119928 Continued fraction expansion of the value of Minkowski's question mark function at Khinchin's constant (A002210).
%H A119928 <a href="/index/Me#MinkowskiQ">Index entries for Minkowski's question mark function</a>
%H A119928 <a href="/index/Me#MinkowskiQ">Index entries for sequences related to Minkowski's question mark function</a>
%t A119928 ContinuedFraction[(cf = ContinuedFraction[Khinchin, 80(*arbitrary precision*)]; IntegerPart[Khinchin] + Sum[(-1)^(k)/2^(Sum[cf[[i]], {i, 2, k}] - 1), {k, 2, Length[cf]}])]
%Y A119928 Cf. A119929.
%K A119928 cofr,nonn
%O A119928 0,1
%A A119928 Joseph Biberstine (jrbibers(AT)indiana.edu), May 29 2006; corrected Jun 04 2006