%I
%S 7,11,13,14,19,21,22,25,26,28,31,35,37,38,41,42,44,47,49,50,52,55,56,
%T 59,61,62,67,69,70,73,74,76,79,81,82,84,87,88,91,93,94,97,98,100,103,
%U 104,107,109,110,112,115,117,118,121,122
%N Positions of check bits in code in A075928.
%C This sequence can be constructed from A057716 (all natural numbers other than the powers of two) by prepending an inverted parity bit.
%D J. H. Conway and N. J. A. Sloane, Lexicographic codes: errorcorrecting codes from game theory, IEEE Transactions on Information Theory, 32:337348, 1986.
%D R. W. Hamming, Error Detecting and Error Correcting Codes, Bell System Tech. J., Vol. 29, April, 1950, pp. 147160.
%H Bob Jenkins, <a href="http://burtleburtle.net/bob/math/lexicode.html">Tables of Binary Lexicodes</a>
%H Ari Trachtenberg, <a href="http://ipsit.bu.edu/phdthesis_html/phdthesis_html.html">ErrorCorrecting Codes on Graphs: Lexicodes, Trellises and Factor Graphs</a>
%Y Cf. A075928, A075929, A057716, A075936.
%K nonn,easy
%O 0,1
%A Bob Jenkins (bob_jenkins(AT)burtleburtle.net)
