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Search: id:A071101
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| A071101 |
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Expansion of (5+6*x+3*x^2-2*x^3)/(1-2*x-2*x^2-2*x^3+x^4). |
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5
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| 5, 16, 45, 130, 377, 1088, 3145, 9090, 26269, 75920, 219413, 634114, 1832625, 5296384, 15306833, 44237570, 127848949, 369490320, 1067846845, 3086134658, 8919094697, 25776662080, 74495936025, 215297250946, 622220603405, 1798250918672, 5197041610021
(list; graph; listen)
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OFFSET
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0,1
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REFERENCES
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J. Propp, Enumeration of matchings: problems and progress, pp. 255-291 in L. J. Billera et al., eds, New Perspectives in Algebraic Combinatorics, Cambridge, 1999 (see Problem 12).
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LINKS
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J. Propp, Updated article
J. Propp, Enumeration of matchings: problems and progress, in L. J. Billera et al. (eds.), New Perspectives in Algebraic Combinatorics
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CROSSREFS
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Sequence in context: A048777 A099327 A004146 this_sequence A110580 A055552 A086750
Adjacent sequences: A071098 A071099 A071100 this_sequence A071102 A071103 A071104
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KEYWORD
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nonn
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AUTHOR
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N. J. A. Sloane (njas(AT)research.att.com), May 28 2002
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