#KOPC12B. K12-Combinations
K12-Combinations
Given n find the value of ((nC1)2 + 2×(nC2)2 + 3×(nC3)2 + 4×(nC4)2 + ... + n×(nCn)2) % MOD, where MOD = 109+7.
Note: nCr is the number of ways of choosing r items from n items.
Input
The first line of input file contains T which denotes number of test cases. Each of the following line contains an integer n. T ≤ 1000 and n ≤ 106.
Output
The output must contain T lines each line corresponding to a testcase.
Example
Input: 2 1 2</p>Output: 1 6