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Search: id:A051262
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| 1, 10, 200, 6000, 240000, 12000000, 720000000, 50400000000, 4032000000000, 362880000000000, 36288000000000000, 3991680000000000000, 479001600000000000000, 62270208000000000000000
(list; graph; listen)
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OFFSET
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0,2
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COMMENT
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For n >= 1 a(n) is the order of the wreath product of the symmetric group S_n and the Abelian group (C_10)^n. - Ahmed Fares (ahmedfares(AT)my-deja.com), May 07 2001
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LINKS
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Index entries for sequences related to factorial numbers
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FORMULA
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a(n) = 10*A035279, (n) = product(10*k, k=1..n), n >= 1; a(0) := 1.
a(n) = n!*10^n =: (10*n)(!^10);
E.g.f. 1/(1-10*x)
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MAPLE
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with(combstruct):A:=[N, {N=Cycle(Union(Z$10))}, labeled]: seq(count(A, size=n)/10, n=0..14); - Zerinvary Lajos (zerinvarylajos(AT)yahoo.com), Dec 05 2007
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CROSSREFS
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a(n) = A048176(n+1, 0)*(-1)^n (first column of unsigned triangle).
A047058, A051188, A051189, A051232, A035279.
Sequence in context: A126431 A156275 A036362 this_sequence A041183 A041180 A027014
Adjacent sequences: A051259 A051260 A051261 this_sequence A051263 A051264 A051265
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KEYWORD
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easy,nonn
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AUTHOR
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Wolfdieter Lang (wolfdieter.lang(AT)physik.uni-karlsruhe.de)
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