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Search: id:A081048
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A081048 Signed Stirling numbers of the first kind. +0
3
0, 1, -3, 11, -50, 274, -1764, 13068, -109584, 1026576, -10628640, 120543840, -1486442880, 19802759040, -283465647360, 4339163001600, -70734282393600, 1223405590579200, -22376988058521600, 431565146817638400, -8752948036761600000, 186244810780170240000 (list; graph; listen)
OFFSET

0,3

FORMULA

a(n)=n!*Sum {k=1..n, (-1)^(n+1)*1/k} E.g.f. (1+x)^-1 * log(1+x).

CROSSREFS

Cf. A000254, A008275.

Sequence in context: A115081 A103466 A000254 this_sequence A065048 A024335 A024336

Adjacent sequences: A081045 A081046 A081047 this_sequence A081049 A081050 A081051

KEYWORD

easy,sign

AUTHOR

Paul Barry (pbarry(AT)wit.ie), Mar 05 2003

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Last modified August 19 23:53 EDT 2008. Contains 142930 sequences.


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