OFFSET
1,3
EXAMPLE
psi(5/7) = -1.180181440339...
MATHEMATICA
RealDigits[PolyGamma[5/7], 10, 120][[1]] (* Amiram Eldar, Jun 14 2023 *)
PROG
(PARI) -psi(5/7) \\ Amiram Eldar, Jun 14 2023
CROSSREFS
KEYWORD
nonn,cons
AUTHOR
R. J. Mathar, Jun 01 2022
STATUS
approved