I am interested in linking a sum of n=1 to n= Inf of log(csc(f(n))) to an expression related to the Bernoulli function B(s) or other related functions to the Bernoulli numbers. My concern is to arrive to a convergent integer part based on B4 or B8 when studying sum of n=1 to n= Inf of log(csc(f(n)))

In certain way I am interested in the 'unity of mathematics' concepts about the Bernoulli numbers.

Thanks

Carlos