HW5.1

 public class Solution
 {
     public static void main(String[] args)
     {
         int count = 0;

         for(int i = 1; i <= 100; i++)
         {
             System.out.print(getPentagonalNumber(i) + " ");
             count++;

             if(count == 10)
             {
                 System.out.println();
                 count = 0;
             }
         }
     }

     public static int getPentagonalNumber(int n)
     { return n * (3 * n - 2) / 2; }
 }