

A325905


Decimal expansion of 2/e^2.


3



2, 7, 0, 6, 7, 0, 5, 6, 6, 4, 7, 3, 2, 2, 5, 3, 8, 3, 7, 8, 7, 9, 9, 8, 9, 8, 9, 9, 4, 4, 9, 6, 8, 8, 0, 6, 8, 1, 5, 2, 6, 3, 0, 9, 1, 8, 1, 9, 1, 5, 1, 7, 6, 2, 9, 3, 6, 3, 1, 7, 7, 4, 5, 3, 0, 8, 1, 4, 6, 7, 4, 8, 2, 0, 2
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OFFSET

0,1


COMMENTS

Decimal expansion of the asymptotic (n > inf) probability of success in the secretary problem when the number of applicants is uniformly distributed on {1, 2, ..., n}. It means that less is known than in the basic secretary problem, so this constant is less than A068985 (and also A246665).


LINKS

Table of n, a(n) for n=0..74.
E. L. Presman and I. M. Sonin, The best choice problem for a random number of objects, Teor. Veroyatnost. i Primenen., 17:4 (1972), 695706; English version, Theory Probab. Appl., 17:4 (1973), 657668.
Eric Weisstein's MathWorld, Sultan's Dowry Problem
Wikipedia, Secretary problem


EXAMPLE

0.2706705664732253837879989899...


MATHEMATICA

N[2/E^2, 100] // RealDigits // First


CROSSREFS

Equals twice A092553.
Cf. A068985, A246665.
Sequence in context: A019667 A098198 A021791 * A199273 A196833 A245224
Adjacent sequences: A325902 A325903 A325904 * A325906 A325907 A325908


KEYWORD

nonn,cons


AUTHOR

José María Grau Ribas, Sep 08 2019


STATUS

approved



