Sequence. 4,13,36, (), 268 what do you fill in the brackets? 4,13,36,( ),268 A.97 B.81 C.126 D.179

4=1²+3
13=2²+3²
36=3²+3³
97 = 4 & sup2; + 81 (the fourth power of 3)
268 = 5 & sup2; + 243 (quintic power of 3)
That is to say, the n-th power of the sequence an = n & sup2; + 3
Therefore, the answer is a, 97

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