a$)$ Design an algorithm$/$flowchart using Raptor that displays the sum of first $n$ integers those are odd numbers and multiples of $3.$

Example: if $n=2,$ then the sum of first $2$ numbers $($odd and multiple of $3)$ would be $3+9.$ If $n=3,$ then the sum of first $3$ number $($odd and multiple of $3)$ would be $3+9+15.$

Submit raptor files along with your report. Your report should include the screenshot of your flowchart including sample input and output.

b$)$ If $n=4,$ then what's the output of your flowchart?