OFFSET
0,1
LINKS
Vincenzo Librandi, Table of n, a(n) for n = 0..5000
Eric Weisstein's World of Mathematics, Gauss's Digamma Theorem.
Wikipedia, Digamma function: Gauss's digamma theorem.
FORMULA
Psi(5/6) = -gamma + Pi*sqrt(3)/2 - 3*log(3)/2 - 2*log(2).
EXAMPLE
Psi(5/6) = -0.890729412672261240642726801919310525738296...
MATHEMATICA
RealDigits[-PolyGamma[5/6], 10, 90][[1]]
PROG
(PARI) -psi(5/6)
(Maxima) fpprec:90; ev(bfloat(-psi[0](5/6)));
CROSSREFS
KEYWORD
nonn,cons
AUTHOR
Bruno Berselli, Feb 21 2013
STATUS
approved