OFFSET
0,4
EXAMPLE
Equals 0.10167977382768881770446374731...
MAPLE
Digits := 220 ;
x := 0.0 ;
for ndigs from 1 to 200 do
# 10^(ndigs-1)<= n^3 < 10^ndigs
nmin := ceil(10^((ndigs-1)/3)) ;
nmax := floor( root[3](10^(ndigs)-1) ) ;
if nmax >= nmin then
# sum nmin^3.. nmax^3
x := x+evalf(csu/100^ndigs) ;
printf("%.120f\n", x) ;
end if;
end do:
CROSSREFS
KEYWORD
AUTHOR
R. J. Mathar, Jul 09 2015
STATUS
approved