PATTERN *1 121 12421 1248421*

public class Patern {

public static void main(String[] args) {
int i,j,k,space,s=8;

for(i=1;i<32;i*=2)
{
for(space=s;space>0;space--)
System.out.print(" ");
System.out.print("1 ");

for(j=2;j<=i;j*=2)
{
System.out.print(j+ " ");
}

j=j/2;
for(k=j/2;k>=2;)
{
System.out.print(k+" ");
k=k/2;
}
if(i>1)
System.out.print("1 ");
System.out.println();
s-=2;
}

}

}