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A106533 Rumor's constant: the decimal expansion of the number x defined by x*e^(2-2*x)=1. +0
1
2, 0, 3, 1, 8, 7, 8, 6, 9, 9, 7, 9, 9, 7, 9, 9, 5, 3, 8, 3, 8, 4, 7, 9, 0, 6, 2, 0, 6, 2, 4, 1, 9, 8, 7, 9, 1, 0, 5, 4, 9, 8, 7, 8, 7, 5, 9, 0, 5, 7, 0, 3, 1, 7, 5, 0, 0, 2, 4, 7, 7, 4, 4, 1, 5, 1, 9, 5, 7, 5, 0, 7, 5, 9, 1, 9, 0, 6, 0, 2, 4, 8, 8, 3, 6, 2, 5, 0, 3, 6, 1, 6, 9, 0, 7, 7, 9, 6, 4, 2, 9, 1, 4, 6, 9 (list; cons; graph; listen)
OFFSET

0,1

REFERENCES

Daley, D. J. and D. G. Kendall. 1965. Stochastic rumours. Journal of the Institute of Mathematics and Its Applications 1:42-55.

Brian Hayes, Rumours and Errours, American Scientist, Vol. 93, Nbr. 3, 2005, pp. 207-211.

FORMULA

Solution to x*e^(2-2x)=1 with x not equal to 1.

-1/2*LambertW(-2*exp(-2)). - Vladeta Jovovic (vladeta(AT)eunet.rs), May 30 2005

EXAMPLE

c = 0.20318786997997995383847906206241987910549878759057031750024774...

MATHEMATICA

RealDigits[ -ProductLog[ -2/E^2]/2, 10, 111][[1]]

CROSSREFS

Cf. A007456.

Sequence in context: A005307 A143351 A158449 this_sequence A035223 A035184 A120854

Adjacent sequences: A106530 A106531 A106532 this_sequence A106534 A106535 A106536

KEYWORD

cons,nonn

AUTHOR

Robert G. Wilson v (rgwv(AT)rgwv.com), May 03 2005

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Last modified November 30 13:13 EST 2009. Contains 167758 sequences.


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