| 9 * n0 * n0 + n0 * 13 + 2 * n0 * n0 * n0 = (3 * n0 * n0 + (n0 * 2) * n0 * n0 + n0) + 6 * (n0 * n0 + 2 * n0), 3 * n0 * n0 + (n0 * 2) * n0 * n0 + n0 = n * 6 ⊦ (9 * n0 * n0 + n0 * 13 + 2 * n0 * n0 * n0) % 6 = 0 |
3 * n0 * n0 + (n0 * 2) * n0 * n0 + n0 = n * 6 ⊦ ((3 * n0 * n0 + (n0 * 2) * n0 * n0 + n0) + 6 * (n0 * n0 + 2 * n0)) % 6 = 0