intro x hx
case h
n : ℕ
s : Finset ℕ
hs : n = 0 → s = ∅
⊢ ∀ (x : ℕ), x ∈ s → x ^ ↑(Nat.factorization (Nat.centralBinom n)) x ≤ 2 * n
case h
n : ℕ
s : Finset ℕ
hs : n = 0 → s = ∅
x : ℕ
hx : x ∈ s
⊢ x ^ ↑(Nat.factorization (Nat.centralBinom n)) x ≤ 2 * n