# https://yukicoder.me/problems/no/2600

MOD = 998244353

def main():
    Q = int(input())
    N = []
    for _ in range(Q):
        N.append(int(input()))

    max_n = max(3, max(N))
    R = [0] * (max_n + 1)
    R[1] = 1
    R[2] = 1
    for i in range(3, max_n + 1):
        R[i] = (R[i - 1] + R[i - 2]) % MOD
    E = [0] * (max_n + 1)
    E[1] = 1
    E[2] = 3
    for i in range(3, max_n + 1):
        E[i] = (E[i - 1] + E[i - 2]) % MOD

    for n in N:
        r2 = (R[n] * R[n]) % MOD
        e2 = (E[n] * E[n]) % MOD
        r2_ = (5 * r2) % MOD

        print((r2_ - e2) % MOD)


if __name__ == "__main__":
    main()