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URL: https://oeis.org/A147660

⇱ A147660 - OEIS

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A147660
Expansion of 1/(1-x-x^2+x^9-x^11).
2
1, 1, 2, 3, 5, 8, 13, 21, 34, 54, 87, 140, 225, 362, 582, 936, 1505, 2420, 3892, 6259, 10065, 16186, 26029, 41858, 67313, 108248, 174077, 279938, 450176, 723941, 1164190, 1872167, 3010685, 4841568, 7785863, 12520667, 20134840, 32379408, 52070245, 83735639, 134657658, 216546802, 348235059
OFFSET
0,3
MATHEMATICA
CoefficientList[Series[1/(1 - x - x^2 + x^9 - x^11), {x, 0, 50}], x]
PROG
(Magma)
R<x>:=PowerSeriesRing(Rationals(), 50);
Coefficients(R!( 1/(1-x-x^2+x^9-x^11) )); // G. C. Greubel, Dec 09 2025
(SageMath)
def A147660_list(prec):
P.<x>= PowerSeriesRing(QQ, prec)
return P( 1/(1-x-x^2+x^9-x^11) ).list()
print(A147660_list(51)) # G. C. Greubel, Dec 09 2025
CROSSREFS
Sequence in context: A236768 A374742 A023439 * A013987 A261607 A261575
KEYWORD
nonn,easy
AUTHOR
Roger L. Bagula, Nov 09 2008
STATUS
approved