OFFSET
-1,1
FORMULA
Equals -LambertW(-exp(-e)).
EXAMPLE
0.0708315864090785146330862492062472541979...
MATHEMATICA
RealDigits[-ProductLog[-E^-E], 10, 100][[1]] (* Amiram Eldar, Jan 11 2019 *)
PROG
(PARI) default(realprecision, 100); solve(x=0.01, 1, x - log(x) - exp(1))
CROSSREFS
KEYWORD
nonn,cons
AUTHOR
Jianing Song, Dec 30 2018
EXTENSIONS
Typo in name corrected by Mark Andreas, Jan 14 2022
STATUS
approved