OFFSET
0,1
FORMULA
Equals -Sum_{i>=1} i*Zeta'(2*i+1), weighted sum over first derivatives of Riemann-Zeta.
EXAMPLE
0.281482...
PROG
(PARI) sumpos(k=2, k*log(k)/(k^2-1)^2 ) \\ Michel Marcus, May 04 2021
CROSSREFS
KEYWORD
nonn,cons
AUTHOR
R. J. Mathar, May 04 2021
STATUS
approved