import sys

sys.setrecursionlimit(10 ** 6)
def II(): return int(sys.stdin.readline())

def main():
    md=10**9+7
    n=II()
    s=2*n
    ans=1
    for _ in range(n):
        ans*=s*(s-1)//2
        if ans>=md:ans%=md
        s-=2
    print(ans)

main()