Question 480393
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Hi,
{1/2,1,3/2,2,{{{highlight(5/2)}}}...) arithmetic sequence: d = 1/2 
{{{a[n]=a[1]+(n-1)*d}}}
{{{a[n]= 1/2+(n-1)*(1/2) = 1/2 + n/2 - 1/2 = n/2}}}