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A130630
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Periodic sequence with period 1 1 1 1 1 0 0 0 0.
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0
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1, 1, 1, 1, 1, 0, 0, 0, 0, 1, 1, 1, 1, 1, 0, 0, 0, 0, 1, 1, 1, 1, 1, 0, 0, 0, 0, 1, 1, 1, 1, 1, 0, 0, 0, 0, 1, 1, 1, 1, 1, 0, 0, 0, 0
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OFFSET
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0,1
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LINKS
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Table of n, a(n) for n=0..44.
Index entries for linear recurrences with constant coefficients, signature (0,0,0,0,0,0,0,0,1).
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FORMULA
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a(n)=(1/324)*{-31*(n mod 9)+5*[(n+1) mod 9]+5*[(n+2) mod 9]+5*[(n+3) mod 9]+41*[(n+4) mod 9]+5*[(n+5) mod 9]+5*[(n+6) mod 9]+5*[(n+7) mod 9]+5*[(n+8) mod 9]}, with n>=0. - Paolo P. Lava, Jul 04 2007
G.f. -(1+x+x^2+x^3+x^4) / ( (x-1)*(1+x+x^2)*(x^6+x^3+1) ). - R. J. Mathar, Nov 19 2011
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PROG
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(PARI) a(n)=1-n%9\5 \\ Charles R Greathouse IV, Jun 02 2011
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CROSSREFS
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Sequence in context: A014064 A014119 A084052 * A059318 A071029 A071030
Adjacent sequences: A130627 A130628 A130629 * A130631 A130632 A130633
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KEYWORD
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nonn,easy,less
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AUTHOR
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Paul Curtz, Jun 19 2007
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STATUS
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approved
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