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balanced_primes

Specification

Let $p_k$ be the $k$-th prime number. Are there infinitely many $n$ such that $(p_n + p_{n+2}) / 2$ is prime?

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Lean 4 Statement
theorem balanced_primes :
    answer(sorry) ↔ {n : ℕ | Prime ((Nat.nth Prime n + Nat.nth Prime (n + 2)) / 2)}.Infinite
ID: Wikipedia__BalancedPrimes__balanced_primes
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