对一道探索性问题的质疑徐鸿迟（江苏省泰州中学２２５３００）张必华在［１］中对“已知数列｛ａｎ｝满足ａ１＝５６，ａｎ＋１＝１３ａｎ＋（１２）ｎ＋１（ｎ１），并且数列｛ａｎ＋１－１２ａｎ｝是公比为１３的等比数列，求通项ａｎ”的《问题》进行了探索，并指出... Questioning an Exploratory Problem Xu Hongchi (Taizhou Middle School 225300, Jiangsu Province) Zhang Bihua in [1] said that “the known sequence {an} satisfies a1=56, an+1=13an+(12)n+1(n1), and the sequence { An+1-12an} is an analogy with a public ratio of 13; “questions on the term ”an" have been explored and pointed out that...