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A112504
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Fifth column of triangle A112500.
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1
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1, 35, 665, 9107, 100751, 957197, 8110087, 62854845, 453710670, 3091406010, 20086835910, 125465290530, 758173316850, 4455503465430, 25571494599330, 143839855533270, 795332428661055, 4333564250230845, 23317657891319095
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OFFSET
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0,2
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COMMENTS
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For a combinatorial formula see A112500, case k=5.
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LINKS
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FORMULA
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G.f.: 1/product((1-j*x)^(6-j), j=1..5) = 1/(((1-x)^5)*((1-2*x)^4)*((1-3*x)^3)*((1-4*x)^2)*(1-5*x)).
a(n) computable from partial fraction decomposition of g.f. Cf. A112503.
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CROSSREFS
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KEYWORD
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nonn,easy
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AUTHOR
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STATUS
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approved
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