$\text{Let a general term of a series being defined as :}$

$a_{i+1} = 3 \cdot a_{i} + 5 , a_{i} = 2 \cdot k ,$

$a_{i+1} = 4 \cdot a_{i} , a_{i} = 2 \cdot k + 1$

Find the number of perfect squares in this infinite series if its given that $a_{0} = 1$ .

[[/math]]

PS: How to left align this thing?

Rohit: Is this what you wanted?