OFFSET
0,1
LINKS
Ivan Panchenko, Table of n, a(n) for n = 0..1000
FORMULA
Equals sqrt(A019676). - Michel Marcus, Aug 31 2014
Equals 10 * Sum_{k>=0} (k+1/2)!/(k+4)!. - Amiram Eldar, Jun 19 2023
MATHEMATICA
RealDigits[Sqrt[Pi]/3, 10, 120][[1]] (* Harvey P. Dale, Jun 07 2018 *)
PROG
(PARI) sqrt(Pi)/3 \\ Charles R Greathouse IV, Oct 01 2022
CROSSREFS
KEYWORD
nonn,cons
AUTHOR
STATUS
approved