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 A103581 #13 May 08 2020 06:09:10 %S A103581 1,10,111,1100,11101,111110,1111011,11111000,111111001,1111111010, %T A103581 11111111111,111111110100,1111111110101,11111111110110, %U A103581 111111111110011,1111111111110000,11111111111110001,111111111111110010 %N A103581 A102371 written in base 2. %C A103581 The number of zeros in the n-th term appears to match A089398. - _Benoit Cloitre_, Mar 24 2005 %H A103581 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 A103581 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. %F A103581 a(n) = A007088(A102371(n)). - _Michel Marcus_, May 08 2020 %Y A103581 Cf. A007088, A102371, A103583, A103582. %K A103581 nonn,base,easy %O A103581 1,2 %A A103581 _Philippe Deléham_, Mar 23 2005 %E A103581 More terms from _Benoit Cloitre_, Mar 24 2005