7.
若存在常数\(k\left( k\in {{N}^{*}},k\geqslant 2 \right)\)、\(q\)、\(d\),使得无穷数列\(\left\{ {{a}_{n}} \right\}\)满足\({{a}_{n+1}}=\begin{cases} {{a}_{n}}+d,\dfrac{n}{k}\notin {{N}^{*}} \\ q{{a}_{n}},\dfrac{n}{k}\in {{N}^{*}} \\\end{cases}\),则称数列\(\left\{ {{a}_{n}} \right\}\)为“段比差数列”,其中常数\(k\)、\(q\)、\(d\)分别叫做段长、段比、段差\(.\)设数列\(\left\{ {{b}_{n}} \right\}\)为“段比差数列”,它的首项、段长、段比、段差分别为\(1\)、\(3\)、\(q\)、\(3\).
\((1)\)当\(q=0\)时,求\({{b}_{2014}}\),\({{b}_{2016}}\);
\((2)\)当\(q=1\)时,设\(\left\{ {{b}_{n}} \right\}\)的前\(3n\)项和为\({{S}_{3n}}\),
\(①\)证明:\(\left\{ {{b}_{3n-1}} \right\}\)为等差数列;
\(②\)证明:\({{b}_{3n-2}}+{{b}_{3n}}=2{{b}_{3n-1}}\);
\(③\)若不等式\({{S}_{3n}}\leqslant \lambda \cdot {{3}^{n-1}}\)对\(n\in {{N}^{*}}\)恒成立,求实数\(\lambda \)的取值范围;