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 A258987 Decimal expansion of the multiple zeta value (Euler sum) zetamult(3,3). 9
 2, 1, 3, 7, 9, 8, 8, 6, 8, 2, 2, 4, 5, 9, 2, 5, 4, 7, 0, 9, 9, 5, 8, 3, 5, 7, 4, 5, 0, 8, 0, 3, 3, 6, 4, 9, 6, 4, 0, 9, 5, 8, 9, 5, 7, 8, 6, 5, 5, 1, 7, 5, 5, 6, 1, 4, 4, 5, 1, 2, 7, 4, 8, 9, 4, 7, 1, 2, 5, 8, 3, 6, 6, 1, 4, 6, 9, 8, 1, 0, 2, 0, 4, 1, 7, 0, 9, 5, 6, 0, 2, 8, 9, 9, 9, 1, 1, 5, 5, 0, 6, 4, 8 (list; constant; graph; refs; listen; history; text; internal format)
 OFFSET 0,1 LINKS Table of n, a(n) for n=0..102. Eric Weisstein's MathWorld, Multivariate Zeta Function Wikipedia, Multiple zeta function FORMULA zetamult(3,3) = Sum_{m>=2} (Sum_{n=1..m-1} 1/(m^2*n^3)) = (9/2)*zeta(5) - 2*zeta(2)*zeta(3). EXAMPLE 0.213798868224592547099583574508033649640958957865517556144512748947... MATHEMATICA RealDigits[(9/2)*Zeta[5] - 2*Zeta[2]*Zeta[3], 10, 103] // First PROG (PARI) zetamult([3, 3]) \\ Charles R Greathouse IV, Jan 21 2016 CROSSREFS Cf. A072691 (zetamult(1,1)), A197110 (zetamult(2,2)), A258983 (zetamult(3,2)), A258984 (4,2), A258985 (5,2), A258947 (6,2), A258986 (2,3), A258988 (4,3), A258982 (5,3), A258989 (2,4), A258990 (3,4), A258991 (4,4). Sequence in context: A112027 A174400 A178079 * A174254 A024404 A077173 Adjacent sequences: A258984 A258985 A258986 * A258988 A258989 A258990 KEYWORD nonn,cons,easy AUTHOR Jean-François Alcover, Jun 16 2015 STATUS approved

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Last modified July 21 13:28 EDT 2024. Contains 374474 sequences. (Running on oeis4.)