OFFSET
0,1
LINKS
G. C. Greubel, Table of n, a(n) for n = 0..10000
FORMULA
Equals -2*A106533.
Equals LambertW(-2*exp(-2)).
EXAMPLE
-0.4063757399599599076769581241248397582109975751811406350004954883....
MATHEMATICA
RealDigits[N[ProductLog[-2/E^2], 105]][[1]] (* corrected by Vaclav Kotesovec, Feb 21 2014 *)
PROG
(PARI) solve(x=-1, x=0, x*exp(x) + 2*exp(-2)) \\ G. C. Greubel, Nov 15 2017
CROSSREFS
KEYWORD
nonn,cons
AUTHOR
José María Grau Ribas, Jun 17 2013
STATUS
approved