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A119884
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E.g.f. sech(x)/(1-x).
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0
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1, 1, 1, 3, 17, 85, 449, 3143, 26529, 238761, 2337089, 25707979, 311198513, 4045580669, 56438768385, 846581525775, 13564695924545, 230599830717265, 4148392073235329, 78819449391471251, 1576759359017662545
(list; graph; refs; listen; history; internal format)
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OFFSET
| 0,4
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COMMENTS
| Transform of n! under the matrix A119879.
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FORMULA
| a(n)=sum{k=0..n, A119879(n,k)*k!}
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MAPLE
| restart: G(x):= sech(x)/(1-x): f[0]:=G(x): for n from 1 to 21 do f[n]:=diff(f[n-1], x) od: x:=0: seq(f[n], n=0..20); # [From Zerinvary Lajos (zerinvarylajos(AT)yahoo.com), Apr 03 2009]
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CROSSREFS
| Sequence in context: A083217 A037787 A037668 * A143549 A037794 A203851
Adjacent sequences: A119881 A119882 A119883 * A119885 A119886 A119887
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KEYWORD
| easy,nonn
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AUTHOR
| Paul Barry (pbarry(AT)wit.ie), May 26 2006
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