Are there any existing numerical libraries for Eisenstein series? In particular I am interested in calculating values of parabolic Eisenstein series on $ SL(n,\mathbb Z) \setminus GL(n,\mathbb R) / (O(n,\mathbb R),\mathbb R^{\times}) $. If no such libraries exist, might there be a formulation of the series which is more suitable for numerical computations? Ultimately I would like to be able to numerically calculate integrals whose integrand contain such Eisenstein series, which is why I am in search of more efficient methods.
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