If you use "println" then every number will be printed in next line..........

public static void main(String []argh){ Scanner in = new Scanner(System.in); int t=in.nextInt(); for(int i=0;i

        int sum=0;
        sum += a + (pow(2,0)*b);
        System.out.print(sum+" ");
        for(int j=1;j<n;j++)
        {
            sum = sum + (b*pow(2,j));
            System.out.print(sum+" ");
        }
        System.out.println();
        sum=0;


    }
    in.close();
}
static int pow(int a,int b)
{
    if(b>0)
    {
        return(a*pow(a,b-1));
    }
    else
    {
        return 1;
    }
}