OFFSET
0,1
LINKS
G. C. Greubel, Table of n, a(n) for n = 0..10000
Eric Weisstein's World of Mathematics, Lambert W-Function
Wikipedia, Lambert W function
EXAMPLE
-0.42131506848449048984606891964560158397494449...
MAPLE
f:= z-> Re(LambertW(-z)/ln(-z))-Im(LambertW(-z)/ln(-z)):
Digits:= 200:
fsolve(f(x), x=0.4..1.0); # Alois P. Heinz, May 04 2016
MATHEMATICA
FindRoot[Im[ProductLog[z]/Log[z]] - Re[ProductLog[z]/Log[z]] == 0, {z, -0.42241, -0.416207}, WorkingPrecision ->100 ]
CROSSREFS
KEYWORD
nonn,cons
AUTHOR
Eli Jaffe, Mar 27 2016
STATUS
approved