発表
とりあえず，資料をつくった．
Problem 196
196 Prime triplets
Problem 197
197 Investigating the behaviour of a recursively defined sequence
Problem 195
Inscribed circles of triangles with one angle of 60 degrees
とりあえず，資料をつくった．
196 Prime triplets
197 Investigating the behaviour of a recursively defined sequence
Inscribed circles of triangles with one angle of 60 degrees