試解

來源: 於 2025-11-10 19:37:08 [舊帖] [給我悄悄話] 本文已被閱讀：次

Let b=2025!
a1= 1/b, a2=2/b, ... a2025=2025/b

obviously, any item can reduce to the form of a(n)= 1/xxx.