[VA] SRC #012c - Then and Now: Sum

[Fernando del Rey]

Wow! I've been working on-and-off on this new problem, and can't get beyond the useless brute force approach.

I'm not being able to find a good trick to speed up convergence. I've tried to transform the series into an equivalent series with faster convergence, but so far I did not get anywhere.

I have not given up, however, I fear that this time I won't be among the winners circle