MOD = 10**9 + 7

N = int(input())
if N < 4:
    print(0)
else:
    M = N - 1
    s3 = 1 if M % 3 == 0 else 0
    s2_part1 = (M - 1) // 3
    s2_part2 = max(0, ( (M - 1) // 2 ) - (M // 3))
    s2 = s2_part1 + s2_part2

    numerator = M * M - 3 * M + 2 + 6 * s2 + 10 * s3
    res = numerator // 12
    print(res % MOD)