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erdos_394_part_a

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Is it true that $\sum_{n\leq x}t_2(n)\ll \frac{x^2}{(\log x)^c}$ for some $c>0$?

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Lean 4 Statement 
theorem erdos_394_part_a :
    answer(sorry) ↔
      ∃ c > 0, (fun x ↦ ∑ n ∈ Icc 1 ⌊x⌋₊,
      (t 2 n : ℝ)) ≪ (fun x ↦ x ^ 2 / (Real.log x) ^ c)
ID: ErdosProblems__394__erdos_394_part_a
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