I've looked over this Closed form formula for $\sum\limits_{k=1}^n k^k$ but it doesn't have any explicit formula, only the bounds.
So, is it the case that no general formula can exist to calculate it or we haven't found any formula yet?
2026-03-25 17:40:13.1774460413
Why there isn't any formula to calculate $\sum\limits_{k=1}^n{k^k}$ explicitly?
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