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Search: id:A081047
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| A081047 |
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Difference of Stirling numbers of the first kind. |
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+0
1
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| 1, 0, -1, -5, -26, -154, -1044, -8028, -69264, -663696, 6999840, -80627040, -1007441280, -13575738240, -196287356160, -3031488633600, -49811492505600, -867718162483200, -15974614352793600, -309920046408806400, -6320046028584960000
(list; graph; listen)
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OFFSET
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0,4
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FORMULA
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a(n) = abs(s(n, 1))-abs(s(n, 2)), s(n, m) = signed Stirling numbers of the first kind.
E.g.f.: (1+log(1-x))/(1-x); [From Paul Barry (pbarry(AT)wit.ie), Nov 26 2008]
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CROSSREFS
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Cf. A001705, A008275, A081046.
Sequence in context: A053487 A082029 A001705 this_sequence A057793 A090226 A094422
Adjacent sequences: A081044 A081045 A081046 this_sequence A081048 A081049 A081050
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KEYWORD
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easy,sign
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AUTHOR
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Paul Barry (pbarry(AT)wit.ie), Mar 05 2003
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