#include<cstdio>
#include<vector>


using namespace std;
using ll=long long;
using vll=vector<ll>;
using vvll=vector<vll>;


#define MOD 1000000007


int main(void)
{
	int n;

	while(scanf("%d", &n)==1)
	{
		vll a(n+1), s(n+1);

		a[1]=1;
		s[1]=1;
		for(int i=2;i<=n;i++)
		{
			a[i]=(i*s[i-1])%MOD;
			s[i]=(s[i-2]+a[i])%MOD;
		}
		printf("%lld\n", a[n]);
	}

	return 0;
}