#include <bits/stdc++.h>
using namespace std;

int main() {
    int t;
    cin >> t;
    while (t--) {
        int n;
        cin >> n;
        n *= 2;
        vector<long long>dp(n+1);
        dp[0] = 1;
        for(int i = 0; i <= n; i++) {
            for(int j = 2; i+j <= n; j += 2) {
                dp[i+j] += dp[i]*2;
                dp[i+j] %= 998244353;
            }
        }
        cout << dp[n] << endl;
    }
}