OFFSET
1,3
LINKS
Vincenzo Librandi, Table of n, a(n) for n = 1..10000
L. B. W. Jolley, Summation of Series, Dover, 1961. Eq 309 at n=4.
R. J. Mathar, Table of Dirichlet L-series and prime zeta modulo functions for small moduli, arXiv:1008.2547 [math.NT], 2010-2015.
FORMULA
Equals Sum_{n>=1} A011655(n)/n^4. See Mathar link, L(m=3,r=1,s=4).
EXAMPLE
1.0689612184801364854479048854727584224935811870802241063535...
MATHEMATICA
RealDigits[8(Pi^4/729), 10, 90][[1]] (* Bruno Berselli, Dec 20 2011 *)
PROG
(PARI) 8*Pi^4/729 \\ Charles R Greathouse IV, Oct 06 2011
CROSSREFS
KEYWORD
AUTHOR
R. J. Mathar, Oct 06 2011
STATUS
approved