Sum of all subsets formed by first N natural numbers
Basic Accuracy: 34.53% Submissions: 455 Points: 1

Given a number N, the task is to find the sum of all the elements from all possible subsets of a set formed by first N natural numbers.

Input:
The first line of input contains an integer T denoting the number of test cases. Then T test cases follow. Each test case contains a number N as input.

Output:
For each test case, print the sum in new line.

Constraints:
1 <= T <= 50
1 <= N <= 50

Example:
Input:
2

2
3

Output:
6
24

Explanation:

Input :  n = 2
Output : 6
Possible subsets are {{1}, {2}, 
{1, 2}}. Sum of elements in subsets
is 1 + 2 + 1 + 2 = 6.

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