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erdos_940.variants.two
Specification
The set of integers which are the sum of at most two $2$-powerful numbers has density $0$.
Lean 4 Statement
theorem erdos_940.variants.two :
{n : ℕ | ∃ (S : Multiset ℕ),
S.card ≤ 2 ∧ (∀ s ∈ S, (2).Full s) ∧ n = S.sum}.HasDensity 0
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