Test of the pure square 841=29^2. Started from the 16-point product A_29+29A_29 and used randomized delete-and-refill search; found 18 points. The resulting ratio is modest, suggesting the strongest 29 behavior is tied to 5/7 fiber structure rather than 29^2 alone.
Yongxi (Aaron) Lin · 2026-08-08 15:15:57 UTC