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Mathematics
OpenStudy (anonymous):

solve please first two terms

OpenStudy (anonymous):

\[a_{n}=na _{n-1} a_{1}=1\]

OpenStudy (pfenn1):

\[a_1=1\]\[a_2=2a_1=2(1)=2\]\[a_3=3a_2=3(2)=6\]etc.

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