OFFSET
0,1
EXAMPLE
(1-1/2^2) *(1-1/2^3) *(1-1/2^5) *(1-1/2^7) *(1-1/2^11) *.... = 0.63038440599136615460222582...
MATHEMATICA
RealDigits[Times@@(1-1/2^Prime[Range[100]]), 10, 120][[1]] (* Harvey P. Dale, Jun 26 2011 *)
CROSSREFS
KEYWORD
cons,nonn
AUTHOR
R. J. Mathar, Jan 09 2011
STATUS
approved