import numpy as np

N = int(input())
MOD = 1000000007

f = np.frompyfunc(lambda a, b: a * b % MOD, 2, 1)

arr1 = np.arange(1, N + 1, dtype=np.object)
arr2 = np.arange(1, 2 * N, 2, dtype=np.object)
print(f.reduce(arr1) * f.reduce(arr2) % MOD)