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A055868
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Fifth column of triangle A055864.
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1
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0, 0, 0, 0, 625, 9072, 153664, 2985984, 65610000, 1610510000, 43717791744, 1301153248512, 42150011228416, 1476840093750000, 55662776156160000, 2246042996417036288, 96619713808095645696, 4414553991933897025584
(list;
graph;
refs;
listen;
history;
text;
internal format)
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OFFSET
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1,5
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LINKS
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FORMULA
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a(i)=0 for i=1..4; a(n)= n^4*(n+1)^(n-5), n >= 5.
E.g.f.: (270*W(-x)^2-740*W(-x)^3+345*W(-x)^4-36*W(-x)^5-270*x^2-1280*x^3-3645*x^4-9216*x^5)/(4320*x), W(x) principal branch of Lambert's function.
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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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