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%I #11 Feb 17 2018 13:52:19
%S 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,1,1,1,1,0,0,0,0,0,1,1,1,1,1,0,
%T 0,0,0,1,1,0,1,0,1,1,0,1,0,0,1,1,1,1,1,0,0,0,1,0,1,0,0,0,0,1,1,1,1,0,
%U 0,1,0,1,0,0,1,1,0,0,0,1,1
%N A binary m-sequence: expansion of reciprocal of x^19 + x^6 + x^5 + x + 1 (mod 2, shifted by 18 initial 0's).
%C Sequence is 2^19-1 = 524287-periodic. - _M. F. Hasler_, Feb 17 2018
%D S. W. Golomb, Shift-Register Sequences, Holden-Day, San Francisco, 1967.
%D H. D. Lueke, Korrelationssignale, Springer 1992, pp. 43-48.
%D F. J. MacWilliams and N. J. A. Sloane, The Theory of Error-Correcting Codes, Elsevier/North Holland, 1978, p. 408.
%o (PARI) A=matrix(N=19,N,i,j, if(i>1, i==j+1, setsearch([1,5,6,N], j)>0))*Mod(1, 2); a(n)=lift((A^(n-#A+1))[1,1]) \\ _M. F. Hasler_, Feb 17 2018
%Y Cf. A011655..A011745 for other binary m-sequences, and A011746..A011751 for similar expansions over GF(2).
%K nonn
%O 0,1
%A _N. J. A. Sloane_
%E Edited by _M. F. Hasler_, Feb 17 2018
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