KöMaL 2012 K346
From the third term onwards, the terms of a sequence are obtained by subtracting from the previous term the term preceding that. (Thus the third term = the second term - the first term, the fourth term = the third term - the second term, and so on.) The first term is 2, the sum of the first 2012 terms is 2012. What is the second term?
Official text KöMaL. Quoted with source.
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