## https://yukicoder.me/problems/no/2469


def solve(N):
    if N % 2 != 0:
        return 0
    
    return (N - 2) * (N // 2)

def main():
    T = int(input())
    answers = []
    for _ in range(T):
        N = int(input())
        ans = solve(N)
        answers.append(ans)
    
    for ans in answers:
        print(ans)




if __name__ == "__main__":
    main()