10.
已知各项均不相同的等差数列\(\left\{ {{a}_{n}} \right\}\)的前四项和\({{S}_{4}}=14\),且\({{a}_{1}},{{a}_{3}},{{a}_{7}}\)成等比数列.
\((\)Ⅰ\()\)求数列\(\left\{ {{a}_{n}} \right\}\)的通项公式;
\((\)Ⅱ\()\)设\({{T}_{n}}\)为数列\(\left\{ \dfrac{1}{{{a}_{n}}\cdot {{a}_{n+1}}} \right\}\)的前\(n\)项和,求\({{T}_{n}}\).