I make mistake so I get different

Calculus Level 5

n = 1 ( k = 0 n ( 1 ) k k + 1 m = 0 r = 0 m ( 1 ) r ( 1 ) m r + 1 ( m r ) ) \sum_{n=1}^{\infty}\left(\sum_{k=0}^{n}\dfrac{(-1)^k}{k+1} -\sum_{m=0}^{\infty}\sum_{r=0}^{m}\dfrac{(-1)^r(-1)^m}{r+1}\binom{m}{r}\right)

The closed form of the sum above can be expressed as ln a b c \ln a -\dfrac{b}{c} , where a a , b b , and c c are positive integers with b b and c c being primes. Find the value of a + b + c a+b+c .


The answer is 9.

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