Series JEE 2

Algebra Level 3

\[ \frac {1}{1 \times 2} + \frac {1}{1 \times 5} + \frac {1}{3 \times 3} + \frac {1}{2 \times 7} + \frac {1}{5 \times 4} + \ldots \]

Find the sum of this infinite series.