The board / additive combinatorics / #140
Erdős Problem #140
PROVED LEANdatabase updated 2026-08-24
The statement as posed is true, and a proof exists. A solution has also been checked by machine, in Lean.
What the community database records, not our verdict. erdosproblems.com no longer shows statuses (why).
Prize$500
Statement in Leannot yet
Solution in Leanyes
OEISA003002
Original pageerdosproblems.com/140
Attempts
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