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Search: id:A109747
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| A109747 |
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E.g.f.: exp(-exp(-x)+1+x). |
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+0
3
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| 1, 2, 3, 3, 2, 3, 5, -4, 5, 55, -212, 201, 2381, -15350, 35183, 145359, -1821438, 8117231, -521487, -278996548, 2261959961, -7554900397, -34727188796, 690775844605, -4901767330647, 10921820177234, 179314430713387, -2668801066419061, 18150518618843778
(list; graph; listen)
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OFFSET
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0,2
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FORMULA
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a(n) = Sum_{k=0..n} (-1)^(n-k)*Stirling2(n, k)*A000522(k).
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MAPLE
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G:=exp(-exp(-x)+1+x): Gser:=series(G, x=0, 32): seq(n!*coeff(Gser, x, n), n=0..28); - Emeric Deutsch (deutsch(AT)duke.poly.edu), Apr 10 2006
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CROSSREFS
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Cf. A080094.
Sequence in context: A107918 A002963 A046677 this_sequence A105612 A141744 A089783
Adjacent sequences: A109744 A109745 A109746 this_sequence A109748 A109749 A109750
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KEYWORD
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easy,sign
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AUTHOR
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Franklin T. Adams-Watters and Vladeta Jovovic (vladeta(AT)Eunet.yu), Aug 10 2005
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EXTENSIONS
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More terms from Emeric Deutsch (deutsch(AT)duke.poly.edu), Apr 10 2006
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