OFFSET
0,2
LINKS
Eric Weisstein's MathWorld, Multivariate Zeta Function
Wikipedia, Multiple zeta function
FORMULA
zetamult(5,2) = Sum_{m>=2} (Sum_{n=1..m-1} 1/(m^5*n^2)) = 5*zeta(2)*zeta(5) + 2*zeta(3)*zeta(4) - 11*zeta(7).
EXAMPLE
0.03857512434275325550592546437299557001973484169890900833104937293358...
MATHEMATICA
Join[{0}, RealDigits[5*Zeta[2]*Zeta[5] + 2*Zeta[3]*Zeta[4] - 11*Zeta[7], 10, 104] // First]
PROG
(PARI) zetamult([5, 2]) \\ Charles R Greathouse IV, Jan 21 2016
CROSSREFS
KEYWORD
AUTHOR
Jean-François Alcover, Jun 16 2015
STATUS
approved