∀ (motive : (x x_1 : ℕ) → Mathlib.Meta.NormNum.IsNat x x_1 → x_1 % 2 = 0 → Prop) (x x_1 : ℕ)
  (x_2 : Mathlib.Meta.NormNum.IsNat x x_1) (x_3 : x_1 % 2 = 0),
  (∀ (a : ℕ) (h : a % 2 = 0), motive a a ⋯ h) → motive x x_1 x_2 x_3