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 A191335 #4 Mar 30 2012 18:57:32
%S A191335 3,7,1,9,5,1,2,1,9,6,0,6,6,2,8,3,4,5,3,0,7,0,4,1,7,3,4,9,0,1,3,1,2,3,
%T A191335 4,4,6,2,4,2,4,8,3,9,1,1,6,3,4,3,9,3,1,9,4,8,8,1,1,5,9,5,9,0,4,3,1,3,
%U A191335 3,6,7,7,4,9,5,6,7,9,7,7,6,1,4,6,1,1,8,3,3,0,1,7,6,5,9,5,7,4,0,7
%N A191335 Decimal expansion of sum{(1/3)^A005652(k): k>=1}.
%C A191335 See A191329 and A191334.
%e A191335 0.3719512196066283453070417349013123446242...
%t A191335 (See A191329.)
%Y A191335 Cf. A191329, A191334, A005652.
%K A191335 nonn,cons
%O A191335 1,1
%A A191335 _Clark Kimberling_, May 31 2011