A131330 Decimal expansion of constant C associated with the QRS constant.

2, 0, 3, 8, 1, 6, 9, 3, 7, 9, 7, 0, 2, 1, 5, 0, 6, 2, 1, 7, 1, 0, 6, 4, 8, 4, 5, 9, 7, 2, 8, 2, 9, 5, 5, 1, 6, 2, 7, 8, 7, 1, 3, 9, 6, 1, 8, 0, 5, 2, 0, 8, 0, 7, 0, 0, 4, 7, 0, 4, 4, 5, 6, 4, 3, 8, 2, 8, 7, 9, 7, 1, 1, 5, 2, 4, 6, 5, 1, 4, 7, 6, 8, 6, 8, 5, 7, 4, 2, 7, 8, 3, 1, 4, 9, 6, 2, 5, 8, 8, 6, 6, 6, 9, 4

Offset

1,1

Links

G. C. Greubel, Table of n, a(n) for n = 1..10000

Eric Weisstein's World of Mathematics, QRS Constant

Example

2.0381693797021506217...

Mathematica

digits = 105; c1 = z /. FindRoot[Zeta[1/2, z/2], {z, 1}, WorkingPrecision -> digits+5]; c = 1/4*Zeta[3/2, c1/2]; RealDigits[c, 10, digits] // First (* Jean-François Alcover, Apr 07 2015 *)

Prog

(PARI) zetahurwitz(3/2, solve(x=.3, 1, zetahurwitz(1/2, x/2))/2)/4 \\ Charles R Greathouse IV, Jan 31 2018

Crossrefs

Cf. A131329.

Sequence in context: A260591 A127160 A334847 * A022833 A257236 A209259

Adjacent sequences: A131327 A131328 A131329 * A131331 A131332 A131333

Keyword

nonn,cons

Author

Eric W. Weisstein, Jun 28 2007

Status

approved