import sys

int1 = lambda x: int(x) - 1

# input = lambda: sys.stdin.buffer.readline()
input = lambda: sys.stdin.readline().rstrip()
ii = lambda: int(input())
i1 = lambda: int1(input())
mi = lambda: map(int, input().split())
mi1 = lambda: map(int1, input().split())
li = lambda: list(mi())
li1 = lambda: list(mi1())
lli = lambda n: [li() for _ in range(n)]

INF = float("inf")
mod = int(1e9 + 7)
# mod = 998244353

m = 1000010
p = [0] * m
for i in range(1, m):
    p[i] = p[i - 1] + i * i

for _ in range(ii()):
    n = ii()
    ans = 0
    ans -= (n - 1) * n
    ans -= 2 * n * n
    ans += n
    ans += n * (n - 1)
    ans += n * n * n
    ans -= n * n * (n - 1)
    ans += p[n - 1] * 2
    print(ans)