#include<bits/stdc++.h>
// use gp_hash_table<int,int,custom_hash> m;
// in place of map
#include <ext/pb_ds/assoc_container.hpp>
using namespace std;
using namespace __gnu_pbds;
#define rep(i,n) for(int i=0;i<n;++i)
#define repa(i,a,n) for(int i=a;i<n;++i)
#define repr(i,n) for(int i=n-1;i>=0;--i)
#define repba(i,b,a) for(int i=b;i>=a;--i)
#define repab(i,a,b) for(int i=a;i<b;++i)
#define ll long long
// #define ull unsigned long long
#define vi vector<int>
#define msi map<string,int>
#define mii map<int,int>
#define viip vector<pair<int,pair<int,int> > > 
#define mp make_pair
#define vip vector<pair<int,int> >
#define pb push_back 
#define po pop_back
#define fi first
#define sec second
#define all(v) v.begin(),v.end()
#define rall(v) v.rbegin(),v.rend()
// #define s(v) v.size()
ll mod = 998244353;
mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());//use rng()%n for numbers in range [0,n-1]
// This custom_hash is for unordered_map 
// use map<int, int, custom_hash> mp;

struct custom_hash {
    static uint64_t splitmix64(uint64_t x) {
        // http://xorshift.di.unimi.it/splitmix64.c
        x += 0x9e3779b97f4a7c15;
        x = (x ^ (x >> 30)) * 0xbf58476d1ce4e5b9;
        x = (x ^ (x >> 27)) * 0x94d049bb133111eb;
        return x ^ (x >> 31);
    }

    size_t operator()(uint64_t x) const {
        static const uint64_t FIXED_RANDOM = chrono::steady_clock::now().time_since_epoch().count();
        return splitmix64(x + FIXED_RANDOM);
    }
};
ll gcd(ll a,ll b){
	if(b==0)return a;
	return gcd(b,a%b);
}
using uint=unsigned;
using ull=unsigned long long;
struct mint{
	uint v;
	mint(ll vv=0){s(vv%mod+mod);}
	mint& s(uint vv){
		v=vv<mod?vv:vv-mod;
		return *this;
	}
	mint operator-()const{return mint()-*this;}
	mint& operator+=(const mint&rhs){return s(v+rhs.v);}
	mint&operator-=(const mint&rhs){return s(v+mod-rhs.v);}
	mint&operator*=(const mint&rhs){
		v=ull(v)*rhs.v%mod;
		return *this;
	}
	mint&operator/=(const mint&rhs){return *this*=rhs.inv();}
	mint operator+(const mint&rhs)const{return mint(*this)+=rhs;}
	mint operator-(const mint&rhs)const{return mint(*this)-=rhs;}
	mint operator*(const mint&rhs)const{return mint(*this)*=rhs;}
	mint operator/(const mint&rhs)const{return mint(*this)/=rhs;}
	mint pow(int n)const{
		mint res(1),x(*this);
		while(n){
			if(n&1)res*=x;
			x*=x;
			n>>=1;
		}
		return res;
	}
	mint inv()const{return pow(mod-2);}
	/*mint inv()const{
		int x,y;
		int g=extgcd(v,mod,x,y);
		assert(g==1);
		if(x<0)x+=mod;
		return mint(x);
	}*/
	friend ostream& operator<<(ostream&os,const mint&m){
		return os<<m.v;
	}
	bool operator<(const mint&r)const{return v<r.v;}
	bool operator==(const mint&r)const{return v==r.v;}
};
const int maxn = 1e7+2;
mint inv[maxn],fac[maxn],pow1[maxn];
int main() {
	ios::sync_with_stdio(0);
	cin.tie(0);
	cout.tie(0);
	//#ifndef ONLINE_JUDGE
   // 	freopen("input.txt", "r", stdin);
    	//freopen("output.txt", "w", stdout);
	//#endif
	int n;
	cin>>n;
	fac[0]=1;
	repa(i,1,n+1){
		fac[i]=fac[i-1]*i;
	}
	inv[n] = fac[n].inv();
	repr(i,n){
		inv[i] = inv[i+1]*(i+1);
	}
	mint x = 3;
	mint ans = x.pow(n);
	pow1[0]=1;
	repa(i,1,n+1){
		pow1[i] = pow1[i-1]*2;
	}
	repa(i,n/2+1,n+1){
		ans -= pow1[n-i]*inv[i]*inv[n-i]*fac[n]*2;
	}
	cout<<ans;
	return 0;
}

Measured memory_bytes: 117504