Sum the first n odd numbers in a series
Example
{% scaleimage l20_example.png %}
Step 1
Add one to the highest number and divide by two.
{% scaleimage l20_step1.png %}
Step 2
Square the result of step 1.
{% scaleimage l20_step2.png %}
Step 3
Alternatively, if you know n then square n.
{% scaleimage l20_step3.png %}