Question 475672
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Hi,
write the first four terms of the sequence whose general term is given
If I am understanding Your question properly: 
{{{a[n] = 3(3n-2)}}}
{{{a[1] = 3(3n-2) = 3}}}
{{{a[2] = 3(3n-2) = 12}}}
{{{a[3] = 3(3n-2)= 21}}}
{{{a[4] = 3(3n-2)= 30}}}