1 #include<iostream> 2 #include<cstdio> 3 #include<string> 4 #include<cstring> 5 #include<set> 6 #include<map> 7 #include<algorithm> 8 #include<cstdlib> 9 #include<vector>10 #include<cmath>11 #include<sstream>12 using namespace std;13 int main()14 {15     int T;16     scanf("%d", &T);17     while(T--)18     {19         int n;20         scanf("%d", &n);21         printf("%d\n", (n * n * n + 5 * n) / 6 + 1);22     }23     return 0;24 }