OFFSET
1,1
EXAMPLE
2.1428608638549299567494000...
PROG
(PARI) suminf(n=1, 1/(2^n\n)) \\ Charles R Greathouse IV, Jul 24 2011
CROSSREFS
KEYWORD
nonn,cons
AUTHOR
Yalcin Aktar, Jul 24 2011
STATUS
approved