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 A105085 #14 Jan 25 2020 00:43:42 %S A105085 6,7,12,13,10,11,8,9,30,31,20,21,18,19,16,17,22,23,28,29,26,27,56,57, %T A105085 46,47,36,37,34,35,32,33,38,39,44,45,42,43,40,41,62,63,52,53,50,51,48, %U A105085 49,54,55,60,61,122,123,88,89,78,79,68,69,66,67,64,65,70,71,76,77,74,75,72 %N A105085 Write the terms of A102370 in base 2, read by upward-sloping diagonals and convert to base 10. %C A105085 Read the central column of Table 1 of the paper, s(n), by upward-sloping diagonals. - _R. J. Mathar_, Aug 10 2007 %H A105085 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>]. %F A105085 a(2n) = 2*A102370(n+1), a(2n+1) = a(2n) + 1. - _Philippe Deléham_, Nov 11 2007 %K A105085 nonn,base %O A105085 0,1 %A A105085 _N. J. A. Sloane_, Apr 29 2005 %E A105085 Corrected and extended by _R. J. Mathar_, Aug 10 2007