import sys
import math

n = int(sys.stdin.readline())
if n == 1:
    print(0)
    exit()
free_pos = 4 * (n - 1)
res = math.comb(free_pos, 2 * n - 4) * n

skewer_to_fill = (2*n-4) // 4
res %= 1000000007
sign = -1
for i in reversed(range(2, skewer_to_fill+2)):
    res += sign * math.comb(n, i)
    res %= 1000000007
    sign *= -1

print(res % 1000000007)

# res - 1