#include <bits/stdc++.h>
#define F first
#define S second
#define sz(x) int(x.size())
#define pb push_back
#define N 100005
#define M ll(1e9 + 7)
using namespace std;
typedef long double ld;
typedef long long ll;
typedef short int si;
ll fx(ll a, ll b) {return (a + b) % M;}
ll mx(ll a, ll b) {return (a * b) % M;}
ll dp[351][351][2], binnom[351][351];
int main()
{
ios_base::sync_with_stdio(0); istream::sync_with_stdio(0); cin.tie(0); cout.tie(0);
int n;
cin >> n;
binnom[0][0] = 1;
for (int i = 1; i <= n; i++)
for (int j = 0; j <= i; j++)
{
if (j == 0) binnom[i][j] = 1;
else if (j == i) binnom[i][j] = 1;
else binnom[i][j] = fx(binnom[i - 1][j - 1], binnom[i - 1][j]);
}
dp[0][n][0] = 1;
for (ll i = 2; i <= n; i++) dp[0][n - i][0] = binnom[n][i];
dp[0][n - 1][1] = binnom[n][1];
for (int i = 0; i < n - 1; i++)
for (int j = 0; j <= n; j++)
for (int f = 0; f <= 1; f++)
{
for (int u = 0; u <= j; u++)
{
if (u == i + 2) dp[i + 1][j - u][1] = fx(dp[i + 1][j - u][1], mx(binnom[j][u], dp[i][j][f]));
else dp[i + 1][j - u][f] = fx(dp[i + 1][j - u][f], mx(binnom[j][u], dp[i][j][f]));
}
}
cout << dp[n - 1][0][1] << endl;
}
