code class$=$"asciimath"$>$P Write the first five terms of the recursively defined sequence. $,a_1=14,a_{k+1}=\frac{1}{7}{a}_k^2{a}_1=a_2=a_3=a_4=a_5=$ Write an equivalent series with the index of summation beginning at $n=1.{\displaystyle \underset{n=0}{\overset{}{}}}\frac{x^n}{n!}$ Write an equivalent series with the index of summation beginning at $n=1.{\displaystyle \underset{n=0}{\overset{}{}}}\frac{x^n}{n!}$ Write an equivalent series with the index of summation beginning at $n=1.{\displaystyle \underset{n=0}{\overset{}{}}}\frac{x^n}{n!}$ Write an equivalent series with the index of summation beginning at $n=1.{\displaystyle \underset{n=0}{\overset{}{}}}$