| (i0 * (i0 + 1) * (2 * i0 + 1)) % 6 = 0, 0 < i0, 0 ≤ i0 ⊦ ((i0 - 1) * i0 * (2 * (i0 - 1) + 1)) % 6 = 0 |
i0 = i1 + 1, (i0 * (i0 + 1) * (2 * i0 + 1)) % 6 = 0, 0 < i0, 0 ≤ i0 ⊦ (i1 * i0 * (2 * i1 + 1)) % 6 = 0
Used simplifier rules: ⊦ i0 = i - j ↔ i = i0 + j; (elim) Used terms: i0, 1, i