If
\[ \left(\frac{3}{5}\right)^{3p-2} = \left(\frac{9}{25}\right)^8 \times \left(\frac{3}{5}\right)^{-3} \]
then the value of \( 2p + 1 \) is:
What comes next in the series? \(2, 6, 12, 20, 30, \ ?\)