Bernoulli stated sum of series of powers as:
I had a doubt in the given formula in the picture! What if $n < p$ i.e. $1^4 + 2^4 + 3^4$ here $n = 3$ and $p = 4$ so outer summation runs ($i = 1$ to $p$) from $1$ to $4$. And we have to find $(n-i)!$ [factorial]. Won't it lead to factorial of negative number when $i > n$ ?