OFFSET
1,2
COMMENTS
Psi(x) is the digamma function (logarithmic derivative of the Gamma function).
LINKS
G. C. Greubel, Table of n, a(n) for n = 1..5000
EXAMPLE
-1.2395972796176185082441275516860842454332895226874208...
MAPLE
evalf(Psi(ln(2)), 120);
MATHEMATICA
RealDigits[PolyGamma[Log[2]], 10, 120][[1]]
PROG
(PARI) default(realprecision, 120); psi(log(2))
(MATLAB) format long; psi(log(2))
CROSSREFS
KEYWORD
nonn,cons
AUTHOR
Iaroslav V. Blagouchine, Feb 29 2016
STATUS
approved