OFFSET
1,1
EXAMPLE
psi(3/7) = -2.36581875729498...
MATHEMATICA
RealDigits[PolyGamma[3/7], 10, 120][[1]] (* Amiram Eldar, Jun 14 2023 *)
PROG
(PARI) -psi(3/7) \\ Amiram Eldar, Jun 14 2023
CROSSREFS
KEYWORD
nonn,cons
AUTHOR
R. J. Mathar, Jun 01 2022
STATUS
approved