import sys
from sys import stdin

TT = int(stdin.readline())

mod = 998244353
for loop in range(TT):

    N = int(stdin.readline())

    dp = [1,0]

    for i in range(N):

        ndp = [0,0]
        
        ndp[0] += dp[0] * 2 + dp[1]
        ndp[1] += dp[0] * 2 + dp[1]

        dp = ndp
        dp[0] %= mod
        dp[1] %= mod

    print (dp[0] % mod)