import math
n=int(input())
mod = 1000000007
def fact(n):
    val = 1
    for i in range(2, n + 1):
        val *= i
        val %= mod
    return val
def fact2(n):
    val = 1
    for i in range(1, n + 1,2):
        val *= i
        val %= mod
    return val
ans = (fact(n)*fact(n)*fact2(2*n-1))%mod
print(ans)