#include <bits/stdc++.h>
using namespace std;
#define all(p) p.begin(), p.end()
#define rep(i, a, b) for (int i = (int)(a); i < (int)(b); i++)

#include<atcoder/modint>
using mint = atcoder::modint998244353;

int main(){
    int T;
    cin >> T;
    const int L = 500'500;
    vector<mint> ans(L);
    mint fac2 = 1, fac = 1;
    rep(i, 1, L){
        fac2 *= 2 * i;
        fac2 *= 2 * i - 1;
        fac *= i;
        ans[i + 1] = fac2 / (fac * fac * (i + 1));
    }
    while (T--){
        int N;
        cin >> N;
        if (N & 1) cout << "0\n";
        else cout << ans[N / 2].val() << "\n";
    }
}