#include<bits/stdc++.h>
using namespace std;
#include<atcoder/all>
using namespace atcoder;
using ll = long long;
using mint = modint1000000007;

int n;
//mint dp[556][556][556];

void solve(){
	vector<vector<vector<mint>>> dp(555+1);
	dp[0] = vector<vector<mint>>(555+1,vector<mint>(555+1));
	dp[1] = vector<vector<mint>>(555+1,vector<mint>(555+1));

	dp[1][1][1] = 1;
	dp[1][2][0] = 1;
	for(int i = 1;i<n;i++){
		dp[i+1] = vector<vector<mint>>(555+1,vector<mint>(555+1));
		for(int j = 0;j<555-1;j++){
			for(int k = 0;k<555+1;k++){
				dp[i+1][j][k+1] += dp[i][j][k] *(j-k);
				dp[i+1][j][k] += dp[i][j][k] *k;

				dp[i+1][j][k] += dp[i][j][k] * j*(j-1);

				dp[i+1][j+1][k+1] += dp[i][j][k];
				dp[i+1][j+1][k] += dp[i][j][k]*j*2;
				dp[i+1][j+2][k] += dp[i][j][k];
			}
		}
		dp[i].clear();
	}
	mint ans = 0;
	for(int i = 0;i<=n;i++){
		//cerr<<i<<':'<<dp[n][i][i].val()<<endl;
		ans += dp[n][i][i];
	}
	/*
	for(int i = 0;i<10;i++){
		for(int j = 0;j<10;j++){
			cerr<<dp[2][i][j].val()<<' ';
		}
		cout<<endl;
	}
	*/
	cout<<ans.val()<<endl;
}

signed main(){
	cin.tie(nullptr);
	ios::sync_with_stdio(false);
	cin >> n;
	solve();
}