This post was suggested in part by the 1969 I. M. Pei architecture
at State University of New York, Fredonia, which includes the
Michael C. Rockefeller Arts Center.
Google AI Mode, April 28, 2026 —
"An equilateral triangle subdivided into n 2 congruent triangles
has a central sub-triangle if and only if n is a multiple of 3
(n ≡ 0 (mod 3))."
Refutation —
