spoj#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=10^9+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 testcases.Each of the following line contains an integer n. T<=1000 && n<=10^6.
Output
The output must contain T lines each line corresponding to a testcase.
Example
Input: 2 1 2</p>Output: 1 6