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A046166
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Number of minimal covers on n objects with 5 members.
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4
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0, 0, 0, 0, 1, 171, 17066, 1298346, 83384427, 4762648737, 249485204452, 12226539786912, 568267449522773, 25296121946918823, 1086375882592194558, 45264846407024660598, 1837809636559394481439, 72965749033508656346829
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OFFSET
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1,6
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LINKS
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FORMULA
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G.f.: x^5/[(1-26x)(1-27x)(1-28x)(1-29x)(1-30x)(1-31x)].
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MATHEMATICA
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LinearRecurrence[{171, -12175, 461985, -9853624, 112007964, -530122320}, {0, 0, 0, 0, 1, 171}, 18] (* or *) CoefficientList[Series[(x^5)/((1-26x)(1-27x)(1-28x)(1-29x)(1-30x)(1-31x)) , {x, 0, 100}], x] (* Indranil Ghosh, Feb 20 2017 *)
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CROSSREFS
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KEYWORD
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nonn
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AUTHOR
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STATUS
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approved
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