import math
num = int(raw_input())

def gusu(i, an):
	aa = 0
	for j in range(i/2):
		aa += an[2*j]
	aa = aa * i
	return aa

def kisu(i, an):
	aa = 0
	for j in range(i/2):
		aa += an[2*j+1]
	aa = aa * i
	return aa

an = []
an.append(1)
for i in range(num-1):
	i=i+2
	if i %2 == 0:
		an.append(gusu(i, an))
	else:
		an.append(kisu(i, an))

print an[-1]%1000000007