0,1
0.999999999...9999999999750000000...000004999999...9999991718750000000...000001312499... (see the first link).
Table of n, a(n) for n=0..103.
Gerd Lamprecht, Almost Integer, Patterns in decimals
Gerd Lamprecht, 10000 digit from A-646 in pi.gerdlamprecht.de database
Equals Pi/(2*K(1/(10^27+1)^2)), where K is the complete elliptic integral of the first kind. - Bruno Berselli, Mar 07 2013
0.99999999999999999999999999999999999999999999999999999975000000000000...
(PARI) x=1/(10^27+1); agm(1-x, 1+x) \\ Charles R Greathouse IV, Mar 03 2016
(PARI) agm(sqrt(1-1/(10^27+1)^2), 1) \\ Charles R Greathouse IV, Mar 03 2016
Sequence in context: A137577 A292864 A099646 * A271880 A010734 A180599
Adjacent sequences: A181690 A181691 A181692 * A181694 A181695 A181696
cons,nonn,less
Gerd Lamprecht (gerdlamprecht(AT)googlemail.com), Nov 05 2010
approved