StieltjesGamma
StieltjesGamma[n] gives the Stieltjes constant γn.
StieltjesGamma[n, a] gives the generalized Stieltjes constant γn(a).
Examples
The Euler-Mascheroni constant:
StieltjesGamma[0]
(* EulerGamma *)Higher Stieltjes constants:
N[StieltjesGamma[1]]
(* -0.0728158 *)Please visit the official Wolfram Language Reference for more details.