OFFSET
0,1
COMMENTS
Period 7.
REFERENCES
S. W. Golomb, Shift-Register Sequences, Holden-Day, San Francisco, 1967.
H. D. Lueke, Korrelationssignale, Springer 1992, pp. 43-48.
F. J. MacWilliams and N. J. A. Sloane, The Theory of Error-Correcting Codes, Elsevier/North Holland, 1978, p. 408.
LINKS
Index entries for linear recurrences with constant coefficients, signature (0,0,0,0,0,0,1).
FORMULA
G.f.: (x^6 + x^3 + x + 1)/(1-x^7), a(n+7) = a(n). - Ralf Stephan, Aug 05 2013
MATHEMATICA
Join[{0, 0}, Mod[CoefficientList[1/(x^3 + x + 1) + O[x]^80, x], 2]] (* Jean-François Alcover, Feb 23 2018 *)
PROG
(PARI) A011657(n)=bittest(92, n%7) \\ M. F. Hasler, Feb 17 2018
CROSSREFS
KEYWORD
nonn,easy
AUTHOR
STATUS
approved