The Quest for 700: Weekly GMAT Challenge

Each week Manhattan GMAT posts a GMAT question on our blog and follows up with the answer the next day. Are you up for the challenge?

In a certain sequence, the term An is given by the formula An = 16 – (4 – n)3/|n – 4| for all positive integers n ≠ 4, while A4 = 16. For which integer value of k greater than 2 is the mean of all values in the sequence from A1 through Ak equal to the median of those values?
A: 6
B: 7
C: 8 
D: 9 
E: 10

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