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 A075971 #1 May 16 2003 03:00:00 %S A075971 262143,133956095,4164689439,30480819815,108067596971,181775455573, %T A075971 829778399985,3308792362796,13477935949375,53091885766918, %U A075971 212211419623001,373835875492812,1694348683584839,6774129833031318 %N A075971 Basis for code in A075970. %D A075971 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 A075971 Bob Jenkins, <a href="http://burtleburtle.net/bob/math/lexicode.html">Tables of Binary Lexicodes</a> %H A075971 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 A075971 a(n) = b(2^n), where b is A075970, the binary lexicode, d=18. %F A075971 b(n) = XOR(a(i)) for all i where the i-th bit is set in n. %Y A075971 Cf. A075928, A075929, A075930, A075970, A075972, A075968, A075965, A075977. %K A075971 nonn %O A075971 0,1 %A A075971 Bob Jenkins (bob_jenkins(AT)burtleburtle.net)