exact h_ind
n : Nat
h_ind :
  ∀ {i : Nat},
    getBit (Nat.lsb (n / 2 + 1)) i = true ↔
      getBit (n / 2 + 1) i = true ∧ ∀ (j : Nat), j < i → getBit (n / 2 + 1) j = false
i : Nat
heven : n % 2 = 0
this✝ : n + 2 = (n / 2 + 1) <<< 1
this :
  ∀ (m : Nat),
    (∀ (j : Nat), j < i → getBit m j = false) ↔ ∀ (j : Nat), j < succ i → (decide (j ≥ 1) && getBit m (j - 1)) = false
⊢ getBit (Nat.lsb (n / 2 + 1)) i = true ↔
    getBit (n / 2 + 1) i = true ∧ ∀ (j : Nat), j < i → getBit (n / 2 + 1) j = false
no goals