# -*- coding: utf-8 -*-

import sys

N = int(input())
M = 10**9 + 7

dp = [0] * (10**5 + 1)
def recurrence(n):
    if n==1:
        dp[n] = 1
    elif n==2:
        dp[n] = 2
    elif n==3:
        dp[n] = 6
    elif n==4:
        dp[n] = 28
    else:
        dp[n] = ( n*(dp[n-2]//(n-2) + dp[n-1]) ) % M
        '''
        for i in range(n-1, 0, -2):
            dp[n] += dp[i] % M
        dp[n] *= n
        dp[n] %= M
        '''
    return dp[n]

sys.setrecursionlimit(10**5+1)

for i in range(1, N+1):
    recurrence(i)

print(dp[N])