Use theorem 8.11 to determine the convergence or divergence of the p-series
En=1 3 / (n5/3)© BrainMass Inc. brainmass.com March 4, 2021, 5:43 pm ad1c9bdddf
Please see the attachment.
It is not clear about En in your posting. I think
The convergence of divergences of p-series functions are examined.