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 A075974 #1 May 16 2003 03:00:00 %S A075974 524287,536347135,16659267087,121923751537,432270825142,1669779270546, %T A075974 2925034919093,13215281603292,52815987849274,211162780754599, %U A075974 373971566094226,1693443980145088,6773560256426439 %N A075974 Basis for code in A075973. %D A075974 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 A075974 Bob Jenkins, <a href="http://burtleburtle.net/bob/math/lexicode.html">Tables of Binary Lexicodes</a> %H A075974 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 A075974 a(n) = b(2^n), where b is A075973, the binary lexicode, d=19. %F A075974 b(n) = XOR(a(i)) for all i where the i-th bit is set in n. %Y A075974 Cf. A075928, A075929, A075930, A075973, A075975, A075971, A075977. %K A075974 nonn %O A075974 0,1 %A A075974 Bob Jenkins (bob_jenkins(AT)burtleburtle.net)