OFFSET
1,2
COMMENTS
Si(Infinity)=Pi/2=~1.57079... (A019669).
FORMULA
Equals Integral_{x=0..2*Pi} sin(x)/x dx.
EXAMPLE
1.41815157613262845024578016229974942914245334929501627184272022969...
MATHEMATICA
RealDigits[ SinIntegral[2Pi], 10, 111] [[1]]
CROSSREFS
KEYWORD
cons,nonn
AUTHOR
Robert G. Wilson v, Jan 25 2005
STATUS
approved