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 A340036 #17 Feb 16 2025 08:34:01
%S A340036 1,1,3,9,3,6,6,1,7,3,5,9,2,6,3,9,5,2,1,1,9,1,3,4,8,9,3,5,3,1,9,9,5,8,
%T A340036 0,8,1,9,1,8,3,6,4,2,5,6,8,0,8,2,6,4,7,6,2,7,4,3,1,3,8,5,2,0,3,5,4,9,
%U A340036 7,6,4,9,0,8,5,0,6,7,1,6,1,5,8,3,3,9,4
%N A340036 Decimal expansion of sum of reciprocals of A005150(n) (where A005150(n) is the n-th term of the Look and Say sequence, Method A - initial term is 1).
%C A340036 The series a(n) := 1 + 1/11 + 1/21 + 1/1211 + 1/111221 + 1/312211 + ... converges to 1.139366173592639521191348935319958...
%H A340036 John H. Conway and Brady Haran, <a href="https://www.youtube.com/watch?v=ea7lJkEhytA">Look-and-Say Numbers</a> (2014), Numberphile video.
%H A340036 Eric Weisstein's World of Mathematics, <a href="https://mathworld.wolfram.com/LookandSaySequence.html">Look and Say Sequence</a>.
%H A340036 Wikipedia, <a href="http://en.wikipedia.org/wiki/Look-and-say_sequence">Look-and-say sequence</a>.
%F A340036 Equals Sum_{k>=1} 1/A005150(k).
%e A340036 1.139366173592639521191348935319958...
%Y A340036 Cf. A005150.
%K A340036 cons,nonn
%O A340036 1,3
%A A340036 _Marco Ripà_, Dec 26 2020
%E A340036 More terms from _Amiram Eldar_, Dec 27 2020