Given n, first, calculate the number 2^n. Then, sum the digits that comprise that number. For example:
Input: n = 7
2^n = 128
Output: b = 1 + 2 + 8 = 11
Hello Mayuri, please fix the test and add more cases.
This problem has been improved and now has a working test suite.
sum of first 'n' terms
Compare two input matrices
Is it column vector?
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