import numpy as np
from numpy.fft import fft, ifft
from sys import stdin

def solve():
  for line in stdin:
    n = int(line)
    n3 = n * 3
    s = 1 << (((n3 + 1) * 2 - 1).bit_length() - 1)
    v = int(n3 ** 0.5)
    isp = np.ones(n3 + 1, np.uint8)
    isp[0] = isp[1] = 0
    for i in range(2, v + 1):
      if isp[i]:
        isp[i*i::i] = 0
    f = np.zeros(s, np.complex128)
    f[:n+1] = isp[:n+1]
    p1 = fft(f)
    p2 = np.concatenate((p1[::2], p1[::2]))
    p3 = np.concatenate((p1[::3], p1[3-s%3::3], p1[s%3::3]))
    fg = (p1 * (p1 * p1 - 3.0 * p2) + 2.0 * p3) / 6.0
    g = ifft(fg).real.round().astype(np.int64)
    print(np.sum(g[np.nonzero(isp)]))

solve()