Discussion

Explanation:

The series is in the form of 2na_n + 62 (n − 1), n > 1, where a₁ = 5

For n = 2, a₂ = 5 × 2 + 62 × 1 = 72
For n = 3, a₃ = 72 × 4 + 62 × 2 = 412
For n = 4, a₄ = 412 × 6 + 62 × 3 = 2658
For n = 5, a₅ = 2658 × 8 + 62 × 4 = 21512

Thus the correct option is C.

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