OFFSET
0,1
FORMULA
Equals 5*A203144/8. - R. J. Mathar, Jan 15 2021
Equals Integral_{x=0..oo} exp(-x^(8/5)) dx. - Ilya Gutkovskiy, Apr 10 2024
EXAMPLE
.89657428005659798477251233716026446039512985762916708173167...
MATHEMATICA
RealDigits[(5/8)!, 10, 120][[1]] (* Harvey P. Dale, Jul 30 2019 *)
PROG
(PARI) gamma(13/8) \\ Charles R Greathouse IV, Mar 25 2014
CROSSREFS
KEYWORD
nonn,cons
AUTHOR
N. J. A. Sloane, Dec 29 2011
STATUS
approved