Question 716610
There is no common ratio.
That sequence is not a geometric sequence/progression.
{{{2^2/1^2=4/1=4}}}
{{{3^2/2^2=9/4<>4}}}
It is not the same ratio.
Those ratios have nothing in common.
The sequence 1^2, 2^2, 3^2, ... 
can be thought of as the sum of the arithmetic sequence of the odd numbers
{{{a[n]=2n-1}}} with {{{a[1]=1}}} and {{{d=2}}} gives you 1, 3, 5, 7, ...
{{{c[n]=n^2=sum(2i-1,1,n)}}} gives you
{{{c[1]=1}}}
{{{c[2]=4=1+3}}}
{{{c[3]=9=1+3+5}}}
{{{c[4]=16=1+3+5+7}}}
{{{c[5]=25=1+3+5+7+9}}}
and so on.