OFFSET
0,1
LINKS
Renzo Sprugnoli, Sums of reciprocals of the central binomial coefficients, El. J. Combin. Numb. Th. 6 (2006) # A27
Eric Weisstein's World of Mathematics, Central Binomial Coefficient.
FORMULA
Equals Sum_{n>=1} 1/(n^4 * binomial(2*n,n)).
EXAMPLE
0.51109708258581525710477952336666262075474350507273...
MATHEMATICA
RealDigits[17*Zeta[4]/36, 10, 120][[1]] (* Amiram Eldar, May 25 2023 *)
PROG
(PARI) zeta(4)*17/36 \\ Michel Marcus, Jul 31 2015
CROSSREFS
KEYWORD
nonn,cons
AUTHOR
Eric W. Weisstein, Jul 21 2003
STATUS
approved