OFFSET
0,1
COMMENTS
Gamma(x) is the gamma function. The value of this integral may also be accurately estimated by using bounds given in comments of A268895.
EXAMPLE
0.5412357343286705301495373288795520138992562066499760...
MAPLE
evalf(Int(1/GAMMA(x), x = 0..1), 60);
MATHEMATICA
NIntegrate[1/Gamma[x], {x, 0, 1}, WorkingPrecision->150]
PROG
(PARI) default(realprecision, 150); intnum(x=0, 1, 1/gamma(x))
CROSSREFS
KEYWORD
nonn,cons
AUTHOR
Iaroslav V. Blagouchine, Feb 15 2016
STATUS
approved