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Problem

erdos:938

True ↔ {P | (↑P).IsAPOfLength 3 ∧ ∃ k, P = {Nat.nth Nat.Powerful k, Nat.nth Nat.Powerful (k + 1), Nat.nth Nat.Powerful (k + 2)}}.Finite

Declared status
open
Formalization
formalized
OEIS
A001694 · A076446 · possible

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