OFFSET
2,2
LINKS
G. C. Greubel, Table of n, a(n) for n = 2..1500
FORMULA
zeta'(-18) = -(97692469875*zeta(19))/(8*Pi^18) = - log(A(18)).
Equals -(43867/3192)*(zeta(19)/zeta(18)).
EXAMPLE
-13.74276825021405443522056419051855107309537215770498560....
MATHEMATICA
RealDigits[N[Zeta'[-18], 100]]
CROSSREFS
Cf. A075700 (zeta'(0)), A084448 (zeta'(-1)), A240966 (zeta'(-2)), A259068 (zeta'(-3)), A259069 (zeta'(-4)), A259070 (zeta'(-5)), A259071 (zeta'(-6)), A259072 (zeta'(-7)), A259073 (zeta'(-8)), A266260 (zeta'(-9)), A266261 (zeta'(-10)), A266262 (zeta'(-11)), A266263 (zeta'(-12)), A260660 (zeta'(-13)), A266264 (zeta'(-14)), A266270 (zeta'(-15)), A266271 (zeta'(-16)), A266272 (zeta'(-17)), A266274 (zeta'(-19)), A266275 (zeta'(-20)).
KEYWORD
nonn,cons
AUTHOR
G. C. Greubel, Dec 25 2015
EXTENSIONS
Offset corrected by Rick L. Shepherd, May 30 2016
STATUS
approved