# Peculiar Sequence of Positive Integers!

The sequence of increasing positive integers $${(x_n)_{n \geq 1}}$$ is defined as follows: $$\large{x_1 = 1}$$, the next two terms are 2 even numbers larger than the previous terms - ($$2$$ and $$4$$), the next three terms are the three smallest odd numbers that are larger than all the previous terms - ($$5, 7, 9$$), the next four terms are 4 smallest even numbers larger than all the previous terms - ($$10, 12, 14, 16$$) and so on. Find $$\large{x_{2015}}$$.

Bonus: Generalize for $$\large{x_n}$$.

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