Let {an} be an arithmetic sequence, tolerance be 1, and A1, A2, A4 be an arithmetic sequence 1) Finding the general term formula of sequence {an} 2) Let the sum of the first n terms of the sequence {an} be Sn, and find the sum of the first n terms of the sequence {Sn / an} and TN I can only work out an = n, and then I don't know

Directly define a sequence BN = (Sn / an) and find out the general term formula?

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