1 2 5 16 64 312 1812 12288
series/series.20
Problem
1 2 5 16 64 312 1812 12288
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ANSWER: 95616
The sum of factorial(k)*factorial(n-k) for k=0,...,n.
series/series.20
1 2 5 16 64 312 1812 12288
ANSWER: 95616
The sum of factorial(k)*factorial(n-k) for k=0,...,n.