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 A075977 #1 May 16 2003 03:00:00 %S A075977 1048575,1072694271,33318534175,243847503074,864541650285, %T A075977 3339558541092,5850069838187,26430563206584,105631975698549, %U A075977 422325561509199,747943132188453,3386887960290176,13547120512852878 %N A075977 Basis for code in A075976. %D A075977 J. H. Conway and N. J. A. Sloane, Lexicographic codes: error-correcting codes from game theory, IEEE Transactions on Information Theory, 32:337-348, 1986. %H A075977 Bob Jenkins, <a href="http://burtleburtle.net/bob/math/lexicode.html">Tables of Binary Lexicodes</a> %H A075977 Ari Trachtenberg, <a href="http://ipsit.bu.edu/phdthesis_html/phdthesis_html.html">Error-Correcting Codes on Graphs: Lexicodes, Trellises and Factor Graphs</a> %F A075977 a(n) = b(2^n), where b is A075976, the binary lexicode, d=20. %F A075977 b(n) = XOR(a(i)) for all i where the i-th bit is set in n. %Y A075977 Cf. A075928, A075929, A075930, A075976, A075978, A075974, A075971. %K A075977 nonn %O A075977 0,1 %A A075977 Bob Jenkins (bob_jenkins(AT)burtleburtle.net)