There is something wrong. The solution I submit is not the solution I edited instead of original file.
I was intrigued by this identity, but the straightforward approach scores better in Cody.
Back to basics 9 - Indexed References
Whether the input is vector?
Multiply 2 numbers
Get the elements of diagonal and antidiagonal for any m-by-n matrix
Evened up (or not)
Compute the arithmetic derivative of integers
Set Soldner's constant
Compute an integral of an exponential function
List ways to reach a target sum
Find the last non-zero digit in a primorial
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