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 A103587 #13 May 07 2020 02:29:42 %S A103587 1,2,1,2,1,2,1,1,1,2,1,2,1,2,1,1,1,2,1,2,1,2,1,1,1,2,1,2,1,3,1,2,1,2, %T A103587 1,2,1,1,1,2,1,2,1,2,1,1,1,2,1,2,1,2,1,1,1,2,1,2,1,3,1,2,1,2,1,2,1,1, %U A103587 1,2,1,2,1,2,1,1,1,2,1,2,1,2,1,1,1,2,1,2,1,3,1,2,1,2,1,2,1,1,1 %N A103587 Sequence of run lengths in A103585. %C A103587 Sequence appears to have period 30. - _Ralf Stephan_, May 18 2007 %H A103587 David Applegate, Benoit Cloitre, Philippe Deléham and N. J. A. Sloane, Sloping binary numbers: a new sequence related to the binary numbers [<a href="http://neilsloane.com/doc/slopey.pdf">pdf</a>, <a href="http://neilsloane.com/doc/slopey.ps">ps</a>]. %H A103587 David Applegate, Benoit Cloitre, Philippe Deléham and N. J. A. Sloane, <a href="https://cs.uwaterloo.ca/journals/JIS/VOL8/Sloane/sloane300.html">Sloping binary numbers: a new sequence related to the binary numbers</a>, J. Integer Seq. 8 (2005), no. 3, Article 05.3.6, 15 pp. %Y A103587 Cf. A103585. Different from A056832! %K A103587 nonn %O A103587 1,2 %A A103587 _N. J. A. Sloane_, Mar 24 2005