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 A104378 #12 May 05 2020 05:34:07 %S A104378 3,3,-1,-1,11,-5,-1,-1,3,3,-1,15,-5,-5,-1,-1,3,3,-1,-1,11,-5,-1,-1,3, %T A104378 3,31,-17,-5,-5,-1,-1,3,3,-1,-1,11,-5,-1,-1,3,3,-1,15,-5,-5,-1,-1,3,3, %U A104378 -1,-1,11,-5,-1,-1,3,67,-33,-17,-5,-5,-1,-1,3,3,-1,-1,11,-5,-1,-1,3,3,-1,15,-5,-5,-1,-1,3,3,-1,-1,11,-5,-1,-1,3,3,31,-17,-5,-5,-1,-1,3,3 %N A104378 First differences of A102370. %H A104378 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 A104378 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 A104378 Cf. A102370. %K A104378 sign,base %O A104378 0,1 %A A104378 _N. J. A. Sloane_, Apr 18 2005