prueba.java

public class prueba{
    public static void main(String[] args){
        int n = 3;
        int suma = 0;
        for (int i = 1; i <= 2*n; i+=2)
        {
            suma = suma + (i)*(i+1)*(i+2);
        }
        System.out.println("Suma = "+suma);
    }
}