OFFSET
1,1
COMMENTS
There are two solutions to the equation 2*log(x) = x - 1: {1, 3.51286...}.
Apart from the leading digit the same as A201890. - R. J. Mathar, Jun 05 2013
FORMULA
Equals 1 + A201890.
EXAMPLE
x = 3.512862417252339353965475233218432653832833663402647422251789454...
MAPLE
Digits := 100; evalf([solve(2*ln(n)=n-1, n)]);
MATHEMATICA
RealDigits[x /. FindRoot[2*Log[x] == x - 1, {x, 3.5}, WorkingPrecision -> 110]][[1]]
PROG
(PARI) solve(x=3, 4, 2*log(x)-x+1) \\ Charles R Greathouse IV, Jun 05 2013
CROSSREFS
KEYWORD
nonn,cons
AUTHOR
José María Grau Ribas, Jun 02 2013
STATUS
approved