#include <bits/stdc++.h>
#include <atcoder/all>
using namespace std;
using namespace atcoder;
#define rep(i, n) for(int i=0;i<(n);++i)
#define rep1(i, n) for(int i=1;i<=(n);i++)
#define ll long long
using mint = modint998244353;
using P = pair<ll,ll>;
using lb = long double;
using T = tuple<ll, ll, ll>;
#ifdef LOCAL
#  include <debug_print.hpp>
#  define dbg(...) debug_print::multi_print(#__VA_ARGS__, __VA_ARGS__)
#else
#  define dbg(...) (static_cast<void>(0))
#endif

int main()
{
    int n;
    cin >> n;
    vector<mint> dp(5);
    dp[0] = 1 * mint(5).inv();
    dp[1] = 1 * mint(5).inv();
    dp[2] = 1 * mint(5).inv();
    dp[3] = 1 * mint(5).inv();
    dp[4] = 1 * mint(5).inv();
    mint ans = dp[1] + dp[2] + dp[3];
    for(int i=1;i<n;i++) {
        vector<mint> p(5);
        swap(dp, p);
        dp[1] += p[0]/2;
        dp[0] += p[0]/2;
        dp[0] += p[1]/3;
        dp[1] += p[1]/3;
        dp[2] += p[1]/3;
        dp[1] += p[2]/3;
        dp[2] += p[2]/3;
        dp[3] += p[2]/3;
        dp[2] += p[3]/3;
        dp[3] += p[3]/3;
        dp[4] += p[3]/3;
        dp[3] += p[4]/2;
        dp[4] += p[4]/2;
        ans += dp[1] + dp[2] + dp[3];
    }
    cout << ans.val() << endl;
    return 0;
}