{motive : Lean.Expr → Sort u} →
  (t : Lean.Expr) →
    ((declName : Lean.Name) → (us : List Lean.Level) → motive (Lean.Expr.const declName us)) →
      ((u : Lean.Level) → motive (Lean.Expr.sort u)) → (Nat.hasNotBit 24 t.ctorIdx → motive t) → motive t