DESIGN * DEVELOPMENT * HIGHTECH

Bimagic Square of Order 20 B

Chen Kejun and Li Wen

First Bimagic Square of Order 20. By @ Chen Kejun and @ Li Wen, 2010. Second Bimagic Square of Order 20 by @ Mikael Hermansson, May 2022. S2=1070670, S3=321602000