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Search: id:A122512
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| A122512 |
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Expansion of 1/(1 - x^2 - 2 x^3 + x^4). |
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+0
1
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| 1, 0, 2, 1, 3, 4, 5, 10, 11, 21, 27, 43, 64, 92, 144, 205, 316, 462, 693, 1035, 1532, 2301, 3406, 5099, 7581, 11303, 16855, 25088, 37432, 55728, 83097, 123800, 184490, 274969, 409683, 610628, 909845, 1355970, 2020635, 3011157, 4487395, 6686979
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OFFSET
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0,3
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MATHEMATICA
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p[x_] := x^4 - 2x^2 - x + 1 q[x_] := ExpandAll[x^4*p[1/x]] Table[ SeriesCoefficient[ Series[x/q[x], {x, 0, 50}], n], {n, 0, 50}]
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CROSSREFS
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Cf. A006054, A006053.
Sequence in context: A048212 A077159 A075379 this_sequence A122514 A130077 A080412
Adjacent sequences: A122509 A122510 A122511 this_sequence A122513 A122514 A122515
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KEYWORD
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nonn
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AUTHOR
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Roger Bagula (rlbagulatftn(AT)yahoo.com), Sep 16 2006
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EXTENSIONS
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Edited by njas, Sep 17 2006
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