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A091131
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Decimal expansion of e-1.
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0
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1, 7, 1, 8, 2, 8, 1, 8, 2, 8, 4, 5, 9, 0, 4, 5, 2, 3, 5, 3, 6, 0, 2, 8, 7, 4, 7, 1, 3, 5, 2, 6, 6, 2, 4, 9, 7, 7, 5, 7, 2, 4, 7, 0, 9, 3, 6, 9, 9, 9, 5, 9, 5, 7, 4, 9, 6, 6, 9, 6, 7, 6, 2, 7, 7, 2, 4, 0, 7, 6, 6, 3, 0, 3, 5, 3, 5, 4, 7, 5, 9, 4, 5, 7, 1, 3, 8, 2, 1, 7, 8, 5, 2, 5, 1, 6, 6, 4, 2, 7, 4, 2
(list; constant; graph; refs; listen; history; internal format)
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OFFSET
| 1,2
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COMMENTS
| Average length of the first increasing run in a random permutation of n integers as n->Infinity.
= Sum_{k >= 1} 1/k! [From Eric Desbiaux (moongerms(AT)wanadoo.fr), Mar 21 2009]
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LINKS
| Eric Weisstein's World of Mathematics, Permutation
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EXAMPLE
| e-1 = 1.71828182...
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MATHEMATICA
| RealDigits[N[E - 1, 105]][[1]]
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CROSSREFS
| Cf. A001113. [From R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Sep 08 2008]
Sequence in context: A138616 A021937 A021586 * A145963 A199439 A153625
Adjacent sequences: A091128 A091129 A091130 * A091132 A091133 A091134
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KEYWORD
| nonn,cons,easy
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AUTHOR
| Eric Weisstein (eric(AT)weisstein.com), Dec 19, 2003
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