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0, 1, 2, 4, 5, 7, 9, 12, 12, 13, 14, 16, 17, 19, 21, 24, 24, 25, 26, 28, 29, 31, 33, 36, 36, 37, 38, 40, 41, 43, 45, 48, 48, 49, 50, 52, 53, 55, 57, 60, 60, 61, 62, 64, 65, 67, 69, 72, 72, 73, 74, 76, 77, 79, 81, 84, 84, 85, 86, 88, 89, 91, 93, 96, 96, 97, 98, 100, 101, 103, 105, 108
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OFFSET
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0,3
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LINKS
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Table of n, a(n) for n=0..71.
Index entries for linear recurrences with constant coefficients, signature (1,0,0,0,0,0,0,1,-1).
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FORMULA
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G.f.: x*(3*x^6+2*x^5+2*x^4+x^3+2*x^2+x+1) / ((x-1)^2*(x+1)*(x^2+1)*(x^4+1)). - Colin Barker, Jul 26 2013
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MATHEMATICA
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LinearRecurrence[{1, 0, 0, 0, 0, 0, 0, 1, -1}, {0, 1, 2, 4, 5, 7, 9, 12, 12}, 80] (* Harvey P. Dale, Jan 28 2015 *)
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CROSSREFS
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Sequence in context: A338758 A051060 A116650 * A140206 A007818 A158618
Adjacent sequences: A140202 A140203 A140204 * A140206 A140207 A140208
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KEYWORD
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nonn,easy
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AUTHOR
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Nadia Heninger and N. J. A. Sloane, Jun 09 2008
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STATUS
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approved
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