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Search: id:A132962
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| A132962 |
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a(n) = n!*Sum_{d|n} (-1)^(d+1)/(d!*(n/d)!^d). |
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+0
6
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| 1, 0, 2, -3, 2, 5, 2, -140, 282, 819, 2, -20482, 2, 133419, 1527528, -4661085, 2, -153296429, 2, 1402482796, 36278688162, 13748957859, 2, -14081800718427, 5194672859378, 7905848380325, 2977584150505252, 12956452725792600, 2, -1314647260913859151
(list; graph; listen)
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OFFSET
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1,3
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FORMULA
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E.g.f.: Sum_{k>0}(1-exp(-x^k/k!)).
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MATHEMATICA
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Rest[ Range[0, 30]! CoefficientList[ Series[ Sum[1 - Exp[ -x^k/k! ], {k, 30}], {x, 0, 30}], x]] - Robert G. Wilson v (rgwv(AT)rgwv.com), Sep 13 2007
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CROSSREFS
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Cf. A038041, A132958, A132959, A132960, A132961, A132963.
Sequence in context: A096776 A118176 A005731 this_sequence A046145 A103309 A007967
Adjacent sequences: A132959 A132960 A132961 this_sequence A132963 A132964 A132965
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KEYWORD
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easy,sign
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AUTHOR
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Vladeta Jovovic (vladeta(AT)Eunet.yu), Sep 06 2007
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EXTENSIONS
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More terms from Robert G. Wilson v (rgwv(AT)rgwv.com), Sep 13 2007
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