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A147659 Expansion of 1/(1-x-x^2-x^10+x^12). 1

%I #18 Dec 19 2022 02:15:55

%S 1,1,2,3,5,8,13,21,34,55,90,146,237,385,625,1015,1648,2676,4345,7055,

%T 11456,18602,30205,49046,79639,129315,209977,340953,553627,898959,

%U 1459697,2370203,3848649,6249296,10147379,16476944,26754661,43443243

%N Expansion of 1/(1-x-x^2-x^10+x^12).

%H Vincenzo Librandi, <a href="/A147659/b147659.txt">Table of n, a(n) for n = 0..1000</a>

%H <a href="/index/Rec#order_12">Index entries for linear recurrences with constant coefficients</a>, signature (1, 1, 0, 0, 0, 0, 0, 0, 0, 1, 0, -1).

%t f[x_] = 1 - x^2 - x^10 - x^11 + x^12;

%t g[x] = ExpandAll[x^12*f[1/x]]; a = Table[SeriesCoefficient[Series[1/g[x], {x, 0, 50}], n], {n, 0, 50}]

%t CoefficientList[Series[1/(1-x-x^2-x^10+x^12),{x,0,40}],x] (* _Harvey P. Dale_, May 31 2012 *)

%K nonn,easy

%O 0,3

%A _Roger L. Bagula_, Nov 09 2008

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Last modified May 29 00:29 EDT 2024. Contains 372921 sequences. (Running on oeis4.)