Can you solve this?

If

1 = 2

2 = 10

3 = 30

4 = 68

then

5 = ?

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can't solve?

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Its very simple

1(1 x 1 + 1) = 2

2(2 x 2 + 1) = 10

3(3 x 3 + 1) = 30

4(4 x 4 + 1) = 68

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5(5 x 5 + 1) = 130

...