Yuki Miyake is now a student at Hyogo Prefectural Akashi Kita Senior High School. In this research, he investigated many examples and conjectured the main result. He is interested in programmings. He often participates in Olympiad in Informatics.

Faculty Sponsor: Katsuya Mori, Hyogo Prefectural Akashi Kita Senior High School, Akashi City, Japan katsuya_mori@hyogo-c.ed.jp