OFFSET
0,1
COMMENTS
The value is equal to lim_{n->oo} (Sum_{d|n#, d>n} 1/phi(d))/(Sum_{d|n#} 1/phi(d)).
LINKS
G. C. Greubel, Table of n, a(n) for n = 0..5000
FORMULA
From Alois P. Heinz, Feb 24 2022: (Start)
Equals 1 - exp(-gamma) = 1 - A080130.
EXAMPLE
(exp(gamma) - 1)/exp(gamma) = 0.438540516433114830175856785....
MAPLE
evalf(1-exp(-gamma), 120); # Alois P. Heinz, Feb 24 2022
MATHEMATICA
RealDigits[(E^EulerGamma - 1)/E^EulerGamma, 10, 50][[1]] (* G. C. Greubel, Oct 02 2017 *)
PROG
(Magma) E:=EulerGamma(RealField(105)); Reverse(Intseq(Floor(10^105*(Exp(E)-1)/Exp(E))))
(PARI) default(realprecision, 105); x=10*(exp(Euler)-1)/exp(Euler); for(n=1, 105, d=floor(x); x=(x-d)*10; print1(d, ", "));
CROSSREFS
KEYWORD
nonn,cons
AUTHOR
Arkadiusz Wesolowski, Oct 19 2013
STATUS
approved