For the arithmetic sequence $a_{1}, a_{2}, \ldots, a_{n}$, suppose $a_{1}=1, a_{2}=2$, and the partial sum $S_{1}=1$. What is $S_{6}$ ?

Name: For the arithmetic sequence $a_{1}, a_{2}, \ldots, a_{n}$, suppose $a_{1}=1, a_{2}=2$, and the partial sum $S_{1}=1$. What is $S_{6}$ ?
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The Answer of For the arithmetic sequence $a_{1}, a_{2}, \ldots, a_{n}$, suppose $a_{1}=1, a_{2}=2$, and the partial sum $S_{1}=1$. What is $S_{6}$ ?

For the Arithmetic Sequence a1,a2,…,ana_{1}, a_{2}, \ldots, a_{n}a1​,a2​,…,an​ , Suppose a1=1,a2=2a_{1}=1, a_{2}=2a1​=1,a2​=2

For the Arithmetic Sequence $a_{1}, a_{2}, \ldots, a_{n}$ , Suppose $a_{1}=1, a_{2}=2$