#include <bits/stdc++.h>
using namespace std;
#include <atcoder/modint>
using mint = atcoder::modint998244353;

int main(){
  ios::sync_with_stdio(false),cin.tie(0);
  vector<mint> dp(1e6+1);
  mint t = 1,inv2 = mint(1)/2;
  for (int i(3);i <= 1e6;++i){
    dp[i] = dp[i-1]*(4*t)*(2*t);
    dp[i] -= (t-1)*(2*t)*(2*t);
    dp[i] += (2*t-1)*(2*t)*inv2-1;
    t *= 2;
  }
  int q; cin >> q;
  while(q--){
  	int n; cin >> n;
  	cout << (dp[n]+1).val() << '\n';
  }
}