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A055868
Fifth column of triangle A055864.
1
0, 0, 0, 0, 625, 9072, 153664, 2985984, 65610000, 1610510000, 43717791744, 1301153248512, 42150011228416, 1476840093750000, 55662776156160000, 2246042996417036288, 96619713808095645696, 4414553991933897025584
OFFSET
1,5
FORMULA
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.
CROSSREFS
Sequence in context: A372845 A250832 A250827 * A016852 A016972 A156162
KEYWORD
nonn,easy
AUTHOR
Wolfdieter Lang Jun 20 2000
STATUS
approved