#include <atcoder/all>
#include <bits/stdc++.h>
using ll = long long;
using ull = unsigned long long;
#define rep(i, n) for(int i = 0; i < (int)(n); i++)
#define REP(i, m, n) for(int i = (int)(m); i < (int)(n); i++)
using namespace std;
using namespace atcoder;
using mint = modint998244353;
const int inf = 1000000007;
const ll longinf = 1ll << 60;

int main() {
    ios::sync_with_stdio(false);
    cin.tie(0);
    cout.tie(0);
    int t;
    cin >> t;
    while(t--) {
        ll n;
        cin >> n;
        ll all = n * (n - 1) / 2;
        mint v0 = mint(2).pow(all);
        mint v1 = n >= 2 ? (n - 1) * mint(2).pow(all - 1) : 0;
        mint v2 = n >= 3 ? (n - 1) * (mint(2).pow(all - 1) - mint(2).pow(all - 1 - 2 * (n - 2)) * (mint(3).pow(n - 2))) : 0;
        cout << (v0 + v1 + v2).val() << endl;
    }
    return 0;
}