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A005168
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n-th derivative of x^x at 1, divided by n.
(Formerly M0380)
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2
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1, 1, 1, 2, 2, 9, -6, 118, -568, 4716, -38160, 358126, -3662088, 41073096, -500013528, 6573808200, -92840971200, 1402148010528, -22554146644416, 385014881294496, -6952611764874240, 132427188835260480
(list; graph; refs; listen; history; internal format)
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OFFSET
| 1,4
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REFERENCES
| R. K. Guy, The strong law of small numbers. Amer. Math. Monthly 95 (1988), no. 8, 697-712.
N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).
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LINKS
| T. D. Noe, Table of n, a(n) for n=1..100
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MATHEMATICA
| Rest[(NestList[ Factor[ D[ #1, x]] &, x^x, 23] /. (x -> 1))/Range[0, 23]] [From Robert G. Wilson v (rgwv(AT)rgwv.com), Aug 10 2010]
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CROSSREFS
| Cf. A005727.
Sequence in context: A093589 A073315 A066320 * A011149 A021439 A198423
Adjacent sequences: A005165 A005166 A005167 * A005169 A005170 A005171
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KEYWORD
| sign,easy,nice
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AUTHOR
| N. J. A. Sloane (njas(AT)research.att.com), R. K. Guy
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EXTENSIONS
| One more term from Robert G. Wilson v (rgwv(AT)rgwv.com), Aug 10 2010
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