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 A075947 #1 May 16 2003 03:00:00 %S A075947 1023,31775,232551,824491,1386837,6330581,25206065,42278310,77607100, %T A075947 402698573,673253467,1218520349,6442523019,10748180761,51539687634, %U A075947 86033873250,156768744521,824634027372,1374532244735,2476057332766 %N A075947 Basis for code in A075946. %D A075947 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 A075947 Bob Jenkins, <a href="http://burtleburtle.net/bob/math/lexicode.html">Tables of Binary Lexicodes</a> %H A075947 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 A075947 a(n) = b(2^n), where b is A075946, the binary lexicode, d=10. %F A075947 b(n) = XOR(a(i)) for all i where the i-th bit is set in n. %Y A075947 Cf. A075928, A075929, A075930, A075946, A075948, A075944, A075941, A075953. %K A075947 nonn %O A075947 0,1 %A A075947 Bob Jenkins (bob_jenkins(AT)burtleburtle.net)