simp
case odd_prime
n : ℕ
hp : Nat.Prime (Nat.succ (2 * n))
hi : ∀ (x : ℕ), x ≤ 2 * n → prodPrimes x ≤ 4 ^ Nat.pred x
⊢ prodPrimes (Nat.succ (2 * n)) ≤ 4 ^ Nat.pred (Nat.succ (2 * n))
case odd_prime
n : ℕ
hp : Nat.Prime (Nat.succ (2 * n))
hi : ∀ (x : ℕ), x ≤ 2 * n → prodPrimes x ≤ 4 ^ Nat.pred x
⊢ prodPrimes (Nat.succ (2 * n)) ≤ 4 ^ (2 * n)