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Search: id:A049398
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| 1, 10, 110, 1320, 17160, 240240, 3603600, 57657600, 980179200, 17643225600, 335221286400, 6704425728000, 140792940288000, 3097444686336000, 71241227785728000, 1709789466857472000, 42744736671436800000
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OFFSET
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0,2
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COMMENT
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The p=9 member of the p-family of sequences {(n+p-1)!/p!}, n >= 1.
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FORMULA
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a(n) = (n+9)!/9!; e.g.f.: 1/(1-x)^10.
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MAPLE
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a:=n->mul(denom( (k+1)/(k+2) ), k=8..n): seq(a(n), n=7..23); - Zerinvary Lajos (zerinvarylajos(AT)yahoo.com), Apr 27 2008
a:=n->mul(numer( (k+1)/(k+2) ), k=9..n): seq(a(n), n=8..24); - Zerinvary Lajos (zerinvarylajos(AT)yahoo.com), Apr 27 2008
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CROSSREFS
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Cf. A000142, A001710, A001715, A001720, A001725, A001730, A049388, A049389.
Sequence in context: A105279 A057093 A055276 this_sequence A055530 A108487 A099883
Adjacent sequences: A049395 A049396 A049397 this_sequence A049399 A049400 A049401
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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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