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Search: id:A114934
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| A114934 |
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Number of connected (5,n)-hypergraphs (without empty edges and without multiple edges). |
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+0
3
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| 0, 0, 0, 21, 2773, 148365, 5878391, 204819447, 6721694469, 214306917321, 6736603947907, 210284186632443, 6541309609120385, 203129541349695597, 6302428271530970943, 195459285517696665759, 6060542952694406463421
(list; graph; listen)
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OFFSET
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0,4
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REFERENCES
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G. Kilibarda and V. Jovovic, "Enumeration of some classes of T_0-hypergraphs", in preparation, 2004.
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FORMULA
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E.g.f.: (1/5!)*(exp(31*x)-5*exp(16*x)-10*exp(15*x)-10*exp(10*x)+20*exp(9*x)+40*exp(8*x)+65*exp(7*x)-30*exp(6*x)-96*exp(5*x)-45*exp(4*x)+20*exp(3*x)+50*exp(2*x)+24*exp(x)-24).
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CROSSREFS
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Cf. A002501, A002502, A093732, A093732, A114933, A114935-A114937.
Sequence in context: A131314 A122801 A099680 this_sequence A098375 A095154 A018238
Adjacent sequences: A114931 A114932 A114933 this_sequence A114935 A114936 A114937
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KEYWORD
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easy,nonn
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AUTHOR
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Goran Kilibarda, Vladeta Jovovic (vladeta(AT)eunet.rs), Jan 08 2006
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