MOD = 10**9 + 7

n = int(input())
s = n - 1
if s % 2 == 1:
    numerator = (pow(s, 2, MOD) + 3) % MOD
else:
    numerator = pow(s, 2, MOD)

inv12 = pow(12, MOD - 2, MOD)
ans = (numerator * inv12) % MOD
print(ans)