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Search: id:A051583
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| A051583 |
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(2*n+9)!!/9!!, related to A001147 (odd double factorials). |
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+0
1
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| 1, 11, 143, 2145, 36465, 692835, 14549535, 334639305, 8365982625, 225881530875, 6550564395375, 203067496256625, 6701227376468625, 234542958176401875, 8678089452526869375, 338445488648547905625, 13876265034590464130625
(list; graph; listen)
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OFFSET
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0,2
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COMMENT
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Row m=9 of the array A(3; m,n) := (2*n+m)!!/m!!, m >= 0, n >= 0.
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FORMULA
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a(n) = (2*n+9)!!/9!!; e.g.f.: 1/(1-2*x)^(11/2).
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MAPLE
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with(finance):seq(mul(cashflows([k, k, 1], 0), k=5..n), n=4..22); # [From Zerinvary Lajos (zerinvarylajos(AT)yahoo.com), Dec 22 2008]
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CROSSREFS
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Cf. A000165, A001147(n+1), A002866(n+1), A051577-A051582 (rows m=0..8).
Sequence in context: A024140 A029529 A015687 this_sequence A027771 A098310 A061613
Adjacent sequences: A051580 A051581 A051582 this_sequence A051584 A051585 A051586
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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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