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.
Sums with Excluded Digits
The Goldbach Conjecture, Part 2
First non-zero element in each column
Square a Number
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