1.
设数列\(\left\{{a}_{n}\right\} \)的前\(n\)项和为\(S_{n}\),已知\({a}_{1}=2,{a}_{n+1}=2{S}_{n}+2\left(n∈{N}^{*}\right) \)
\((1)\)求数列\(\left\{{a}_{n}\right\} \)通项公式;
\((2)\)在\(a_{n}\)与\(a_{n+1}\)之间插入\(n\)个数,使这\(n+2\)个数组成一个公差为\(d_{n}\)的等差数列。
\((\)Ⅰ\()\)求证:\(\dfrac{1}{{d}_{1}}+ \dfrac{1}{{d}_{2}}+ \dfrac{1}{{d}_{3}}+…+ \dfrac{1}{{d}_{n}} < \dfrac{15}{16}\left(n∈{N}^{*}\right) \)
\((\)Ⅱ\()\)在数列\(\left\{{d}_{n}\right\} \)中是否存在三项\(d_{m}\),\(d_{k}\),\(d_{p}(\)其中\(m\),\(k\),\(p\)成等差数列\()\)成等比数列,若存在,求出这样的三项;若不存在,说明理由.