Question 178720
{{{sum(3n+2,n=1,m)}}} where n is the natural numbers and m is the mth term in the sequence.  m can be calculated by taking the number of the mth term, subtracting 2 and dividing by 3(for instance take (38-2)/3=12)...so m would be 12 in that case.  Generally when adding terms in a sequence you will be given m.
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