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Search: id:A071088
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| A071088 |
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Number of permutations that avoid the generalized pattern 12345-6. |
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+0
4
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| 1, 1, 2, 6, 24, 120, 719, 5022, 40064, 359400, 3580896, 39233867, 468818397, 6067548429, 84551873634, 1262188317534, 20095114167065, 339883289813330, 6086154606429378, 115025120586250896, 2288119443771888504
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OFFSET
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0,3
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REFERENCES
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S. Kitaev, Partially Ordered Generalized Patterns, Discrete Math. 298 (2005), no. 1-3, 212-229.
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LINKS
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S. Kitaev, Partially Ordered Generalized Patterns
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FORMULA
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E.g.f.: exp(int(A(y), y=0..x)), where A(y) = 1/(sum_{i>= 0}y^{5*i}/(5*i)! - sum_{i>= 0} y^{5*i+1}/(5*i+1)!).
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CROSSREFS
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Cf. A071075, A071076, A071077.
Sequence in context: A164872 A052398 A047890 this_sequence A122417 A033644 A154654
Adjacent sequences: A071085 A071086 A071087 this_sequence A071089 A071090 A071091
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KEYWORD
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nonn
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AUTHOR
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Sergey Kitaev (kitaev(AT)math.chalmers.se), May 26 2002
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EXTENSIONS
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More terms from Vladeta Jovovic (vladeta(AT)eunet.rs), May 28 2002
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