| i + j = i0 * 2 + j0, j0 < 2, j < i0, i ≤ j, 0 ≤ j0, 0 ≤ i0, 0 ≤ i + j, i < i0 ⊦ |
j0 = 1, i + j = i0 * 2 + j0, j0 < 2, j < i0, i ≤ j, 0 ≤ j0, 0 ≤ i0, 0 ≤ i + j, i < i0 ⊦
i + j = i0 * 2 + j0, j0 < 2, j < i0, i ≤ j, 0 ≤ j0, 0 ≤ i0, 0 ≤ i + j, i < i0 ⊦ j0 = 1
Used formulas: j0 = 1