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 A147663 Expansion of 1/(1 - x - x^2 + x^3 - x^7 + x^9 - x^11). 23
 1, 1, 2, 2, 3, 3, 4, 5, 7, 9, 12, 16, 21, 28, 37, 50, 66, 88, 116, 154, 203, 269, 356, 472, 625, 828, 1097, 1453, 1925, 2550, 3379, 4476, 5930, 7855, 10406, 13784, 18260, 24189, 32044, 42449, 56233, 74493, 98682, 130726, 173175, 229409, 303902, 402585 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,3 LINKS G. C. Greubel, Table of n, a(n) for n = 0..1000 Curtis T. McMullen, Dynamics on K3 surfaces: Salem numbers and Siegel disks, 2005. Index entries for linear recurrences with constant coefficients, signature (1,1,-1,0,0,0,1,0,-1,0,1). FORMULA G.f.: -1/((x^3 + x^2 - 1)*(x^8 - x^7 + x^5 - x^4 + x^3 - x + 1)). - Colin Barker, Sep 18 2013 a(n) = a(n-1) + a(n-2) - a(n-3) + a(n-7) - a(n-9) + a(n-10), n >= 10. - Franck Maminirina Ramaharo, Oct 31 2018 MATHEMATICA CoefficientList[Series[1/(1 - x - x^2 + x^3 - x^7 + x^9 - x^11), {x, 0, 50}], x] (* Franck Maminirina Ramaharo, Oct 31 2018 *) LinearRecurrence[{1, 1, -1, 0, 0, 0, 1, 0, -1, 0, 1}, {1, 1, 2, 2, 3, 3, 4, 5, 7, 9, 12}, 50] (* Harvey P. Dale, May 31 2020 *) PROG (PARI) Vec(-1/((x^3+x^2-1)*(x^8-x^7+x^5-x^4+x^3-x+1))  + O(x^50)) \\ Colin Barker, Sep 18 2013 (MAGMA) m:=50; R:=PowerSeriesRing(Integers(), m); Coefficients(R!(1/(1 -x-x^2+x^3-x^7+x^9-x^11))); // G. C. Greubel, Nov 03 2018 CROSSREFS Cf. A029826, A117791, A143419, A143438, A143472, A143619, A143644, A173908, A173911, A173924, A173925, A174522, A175740, A175772, A175773, A175782, A181600, A204631, A225391, A225393, A225394, A225482, A225499. Sequence in context: A018243 A127207 A173513 * A301765 A036811 A330265 Adjacent sequences:  A147660 A147661 A147662 * A147664 A147665 A147666 KEYWORD nonn,easy AUTHOR Roger L. Bagula, Nov 09 2008 EXTENSIONS Heavily edited (because the Name, Comments, Formula and Mathematica code did not correspond to the terms of the sequence) by Colin Barker, Sep 18 2013 STATUS approved

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Last modified May 16 20:10 EDT 2022. Contains 353720 sequences. (Running on oeis4.)