# Sum up the series!

Discrete Mathematics Level 4

$1 + \frac{1}{3} + \frac{1\cdot 3}{3\cdot 6} + \frac{1\cdot 3\cdot 5}{3\cdot 6\cdot 9} + \cdots = \sqrt{Y}$

$$Y$$ is given as above, find $$5Y + 1$$.

×