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 A175773 Expansion of 1/(1 - x - x^6 - x^11 + x^12). 23
 1, 1, 1, 1, 1, 1, 2, 3, 4, 5, 6, 8, 10, 13, 17, 22, 28, 37, 48, 62, 80, 103, 133, 172, 223, 289, 374, 483, 625, 808, 1045, 1352, 1749, 2262, 2926, 3785, 4896, 6333, 8191, 10595, 13704, 17726, 22929, 29659, 38363, 49622, 64185, 83022, 107388, 138905, 179672 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,7 COMMENTS The ratio a(n+1)/a(n) is 1.2934859531254534... for n->infinity. LINKS G. C. Greubel, Table of n, a(n) for n = 0..1000 Michael Mossinghoff, Small Salem numbers Index entries for linear recurrences with constant coefficients, signature (1,0,0,0,0,1,0,0,0,0,1,-1). FORMULA G.f.: 1/((1 - x + x^2)*(1 - x^2 - x^3 + x^5 - x^7 - x^8 + x^10)). a(n) = a(n-1) + a(n-6) + a(n-11) - a(n-12), n >= 12. - Franck Maminirina Ramaharo, Oct 31 2018 MATHEMATICA CoefficientList[Series[1/(1 - x - x^6 - x^11 + x^12), {x, 0, 50}], x] PROG (PARI) x='x+O('x^50); Vec(1/(1-x-x^6-x^11+x^12)) \\ G. C. Greubel, Nov 03 2018 (MAGMA) m:=50; R:=PowerSeriesRing(Integers(), m); Coefficients(R!(1/(1-x-x^6-x^11+x^12))); // G. C. Greubel, Nov 03 2018 CROSSREFS Cf. A175739. Cf. A029826, A117791, A143419, A143438, A143472, A143619, A143644, A147663, A173908, A173911, A173924, A173925, A174522, A175740, A175772, A175782, A181600, A204631, A225391, A225393, A225394, A225482, A225499. Sequence in context: A036415 A054961 A086736 * A234949 A269303 A276642 Adjacent sequences:  A175770 A175771 A175772 * A175774 A175775 A175776 KEYWORD nonn,easy AUTHOR Roger L. Bagula, Dec 04 2010 STATUS approved

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Last modified April 21 22:12 EDT 2019. Contains 322328 sequences. (Running on oeis4.)