Even Number Dear!!!
Find the th term of the following series: Note: Second term onward every term is one more than the average of the neighboring terms.
The answer is 2018.
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1 solution
If the term is a n ,then a n + 1 − a n = 2 0 1 9 − 2 n , a 2 0 1 8 = 1 + 2 0 1 7 + 2 0 1 5 + . . . + ( − 2 0 1 3 ) + ( − 2 0 1 5 ) = 2 0 1 8