OFFSET
1,2
LINKS
B. K. Choudhury, The Riemann zeta-function and its derivatives, Proc. R. Soc. Lond A 445 (1995) 477-499, Table 2 and (19).
FORMULA
zeta''(2) = Sum_{k>=1} (log(k)/k)^2.
EXAMPLE
Equals 1.9892802342989010234208586874215163814944...
MAPLE
evalf(Zeta(2, 2), 100) ;
MATHEMATICA
RealDigits[ Zeta''[2], 10, 97] // First (* Jean-François Alcover, Feb 20 2013 *)
PROG
(PARI) zeta''(2) \\ Michel Marcus, Jan 07 2021
CROSSREFS
KEYWORD
cons,nonn
AUTHOR
R. J. Mathar, Dec 07 2011
STATUS
approved